Add 3 roles, settings for marathons

2025-12-14 20:21:56 +07:00
parent bb9e9a6e1d
commit d0b8eca600
28 changed files with 1679 additions and 290 deletions
--- a/22
+++ b/22
@@ -17,7 +17,11 @@ help:
 	@echo ""
 	@echo "  Build:"
 	@echo "    make build        - Build all containers (with cache)"
-	@echo "    make build-no-cache - Rebuild all containers (no cache)"
+	@echo "    make build-no-cache - Build all containers (no cache)"
+	@echo "    make reup         - Rebuild with cache: down + build + up"
+	@echo "    make rebuild      - Full rebuild: down + build --no-cache + up"
+	@echo "    make rebuild-frontend - Rebuild only frontend"
+	@echo "    make rebuild-backend  - Rebuild only backend"
 	@echo ""
 	@echo "  Database:"
 	@echo "    make migrate      - Run database migrations"
@@ -60,12 +64,28 @@ build:
 build-no-cache:
 	$(DC) build --no-cache

+reup:
+	$(DC) down
+	$(DC) build
+	$(DC) up -d
+
+rebuild:
+	$(DC) down
+	$(DC) build --no-cache
+	$(DC) up -d
+
 rebuild-frontend:
 	$(DC) down
 	sudo docker rmi marathon-frontend || true
 	$(DC) build --no-cache frontend
 	$(DC) up -d

+rebuild-backend:
+	$(DC) down
+	sudo docker rmi marathon-backend || true
+	$(DC) build --no-cache backend
+	$(DC) up -d
+
 # Database
 migrate:
 	$(DC) exec backend alembic upgrade head
--- a/backend/alembic/versions/001_add_roles_system.py
+++ b/backend/alembic/versions/001_add_roles_system.py
@@ -0,0 +1,72 @@
+"""Add roles system
+
+Revision ID: 001_add_roles
+Revises:
+Create Date: 2024-12-14
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision: str = '001_add_roles'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Add role column to users table
+    op.add_column('users', sa.Column('role', sa.String(20), nullable=False, server_default='user'))
+
+    # Add role column to participants table
+    op.add_column('participants', sa.Column('role', sa.String(20), nullable=False, server_default='participant'))
+
+    # Rename organizer_id to creator_id in marathons table
+    op.alter_column('marathons', 'organizer_id', new_column_name='creator_id')
+
+    # Update existing participants: set role='organizer' for marathon creators
+    op.execute("""
+        UPDATE participants p
+        SET role = 'organizer'
+        FROM marathons m
+        WHERE p.marathon_id = m.id AND p.user_id = m.creator_id
+    """)
+
+    # Add status column to games table
+    op.add_column('games', sa.Column('status', sa.String(20), nullable=False, server_default='approved'))
+
+    # Rename added_by_id to proposed_by_id in games table
+    op.alter_column('games', 'added_by_id', new_column_name='proposed_by_id')
+
+    # Add approved_by_id column to games table
+    op.add_column('games', sa.Column('approved_by_id', sa.Integer(), nullable=True))
+    op.create_foreign_key(
+        'fk_games_approved_by_id',
+        'games', 'users',
+        ['approved_by_id'], ['id'],
+        ondelete='SET NULL'
+    )
+
+
+def downgrade() -> None:
+    # Remove approved_by_id from games
+    op.drop_constraint('fk_games_approved_by_id', 'games', type_='foreignkey')
+    op.drop_column('games', 'approved_by_id')
+
+    # Rename proposed_by_id back to added_by_id
+    op.alter_column('games', 'proposed_by_id', new_column_name='added_by_id')
+
+    # Remove status from games
+    op.drop_column('games', 'status')
+
+    # Rename creator_id back to organizer_id
+    op.alter_column('marathons', 'creator_id', new_column_name='organizer_id')
+
+    # Remove role from participants
+    op.drop_column('participants', 'role')
+
+    # Remove role from users
+    op.drop_column('users', 'role')
--- a/backend/alembic/versions/002_marathon_settings.py
+++ b/backend/alembic/versions/002_marathon_settings.py
@@ -0,0 +1,32 @@
+"""Add marathon settings (is_public, game_proposal_mode)
+
+Revision ID: 002_marathon_settings
+Revises: 001_add_roles
+Create Date: 2024-12-14
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision: str = '002_marathon_settings'
+down_revision: Union[str, None] = '001_add_roles'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Add is_public column to marathons table (default False = private)
+    op.add_column('marathons', sa.Column('is_public', sa.Boolean(), nullable=False, server_default='false'))
+
+    # Add game_proposal_mode column to marathons table
+    # 'all_participants' - anyone can propose games (with moderation)
+    # 'organizer_only' - only organizers can add games
+    op.add_column('marathons', sa.Column('game_proposal_mode', sa.String(20), nullable=False, server_default='all_participants'))
+
+
+def downgrade() -> None:
+    op.drop_column('marathons', 'game_proposal_mode')
+    op.drop_column('marathons', 'is_public')
--- a/backend/alembic/versions/003_create_admin_user.py
+++ b/backend/alembic/versions/003_create_admin_user.py
@@ -0,0 +1,38 @@
+"""Create admin user
+
+Revision ID: 003_create_admin
+Revises: 002_marathon_settings
+Create Date: 2024-12-14
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from passlib.context import CryptContext
+
+# revision identifiers, used by Alembic.
+revision: str = '003_create_admin'
+down_revision: Union[str, None] = '002_marathon_settings'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def upgrade() -> None:
+    # Hash the password
+    password_hash = pwd_context.hash("RPQ586qq")
+
+    # Insert admin user (ignore if already exists)
+    op.execute(f"""
+        INSERT INTO users (login, password_hash, nickname, role, created_at)
+        VALUES ('admin', '{password_hash}', 'Admin', 'admin', NOW())
+        ON CONFLICT (login) DO UPDATE SET
+            password_hash = '{password_hash}',
+            role = 'admin'
+    """)
+
+
+def downgrade() -> None:
+    op.execute("DELETE FROM users WHERE login = 'admin'")
--- a/backend/app/api/deps.py
+++ b/backend/app/api/deps.py
@@ -7,7 +7,7 @@ from sqlalchemy.ext.asyncio import AsyncSession

 from app.core.database import get_db
 from app.core.security import decode_access_token
-from app.models import User
+from app.models import User, Participant, Marathon, UserRole, ParticipantRole

 security = HTTPBearer()

@@ -45,6 +45,103 @@ async def get_current_user(
    return user


+def require_admin(user: User) -> User:
+    """Check if user is admin"""
+    if not user.is_admin:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Admin access required",
+        )
+    return user
+
+
+async def get_participant(
+    db: AsyncSession,
+    user_id: int,
+    marathon_id: int,
+) -> Participant | None:
+    """Get participant record for user in marathon"""
+    result = await db.execute(
+        select(Participant).where(
+            Participant.user_id == user_id,
+            Participant.marathon_id == marathon_id,
+        )
+    )
+    return result.scalar_one_or_none()
+
+
+async def require_participant(
+    db: AsyncSession,
+    user_id: int,
+    marathon_id: int,
+) -> Participant:
+    """Require user to be participant of marathon"""
+    participant = await get_participant(db, user_id, marathon_id)
+    if not participant:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="You are not a participant of this marathon",
+        )
+    return participant
+
+
+async def require_organizer(
+    db: AsyncSession,
+    user: User,
+    marathon_id: int,
+) -> Participant:
+    """Require user to be organizer of marathon (or admin)"""
+    if user.is_admin:
+        # Admins can act as organizers
+        participant = await get_participant(db, user.id, marathon_id)
+        if participant:
+            return participant
+        # Create virtual participant for admin
+        result = await db.execute(select(Marathon).where(Marathon.id == marathon_id))
+        marathon = result.scalar_one_or_none()
+        if not marathon:
+            raise HTTPException(status_code=404, detail="Marathon not found")
+        # Return a temporary object for admin
+        return Participant(
+            user_id=user.id,
+            marathon_id=marathon_id,
+            role=ParticipantRole.ORGANIZER.value
+        )
+
+    participant = await get_participant(db, user.id, marathon_id)
+    if not participant:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="You are not a participant of this marathon",
+        )
+    if not participant.is_organizer:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Only organizers can perform this action",
+        )
+    return participant
+
+
+async def require_creator(
+    db: AsyncSession,
+    user: User,
+    marathon_id: int,
+) -> Marathon:
+    """Require user to be creator of marathon (or admin)"""
+    result = await db.execute(select(Marathon).where(Marathon.id == marathon_id))
+    marathon = result.scalar_one_or_none()
+
+    if not marathon:
+        raise HTTPException(status_code=404, detail="Marathon not found")
+
+    if not user.is_admin and marathon.creator_id != user.id:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Only the creator can perform this action",
+        )
+    return marathon
+
+
 # Type aliases for cleaner dependency injection
 CurrentUser = Annotated[User, Depends(get_current_user)]
 DbSession = Annotated[AsyncSession, Depends(get_db)]
--- a/backend/app/api/v1/init.py
+++ b/backend/app/api/v1/init.py
@@ -1,6 +1,6 @@
 from fastapi import APIRouter

-from app.api.v1 import auth, users, marathons, games, challenges, wheel, feed
+from app.api.v1 import auth, users, marathons, games, challenges, wheel, feed, admin

 router = APIRouter(prefix="/api/v1")

@@ -11,3 +11,4 @@ router.include_router(games.router)
 router.include_router(challenges.router)
 router.include_router(wheel.router)
 router.include_router(feed.router)
+router.include_router(admin.router)
--- a/backend/app/api/v1/admin.py
+++ b/backend/app/api/v1/admin.py
@@ -0,0 +1,260 @@
+from fastapi import APIRouter, HTTPException, Query
+from sqlalchemy import select, func
+from sqlalchemy.orm import selectinload
+from pydantic import BaseModel, Field
+
+from app.api.deps import DbSession, CurrentUser, require_admin
+from app.models import User, UserRole, Marathon, Participant, Game
+from app.schemas import UserPublic, MarathonListItem, MessageResponse
+
+router = APIRouter(prefix="/admin", tags=["admin"])
+
+
+class SetUserRole(BaseModel):
+    role: str = Field(..., pattern="^(user|admin)$")
+
+
+class AdminUserResponse(BaseModel):
+    id: int
+    login: str
+    nickname: str
+    role: str
+    avatar_url: str | None = None
+    telegram_id: int | None = None
+    telegram_username: str | None = None
+    marathons_count: int = 0
+    created_at: str
+
+    class Config:
+        from_attributes = True
+
+
+class AdminMarathonResponse(BaseModel):
+    id: int
+    title: str
+    status: str
+    creator: UserPublic
+    participants_count: int
+    games_count: int
+    start_date: str | None
+    end_date: str | None
+    created_at: str
+
+    class Config:
+        from_attributes = True
+
+
+@router.get("/users", response_model=list[AdminUserResponse])
+async def list_users(
+    current_user: CurrentUser,
+    db: DbSession,
+    skip: int = Query(0, ge=0),
+    limit: int = Query(50, ge=1, le=100),
+    search: str | None = None,
+):
+    """List all users. Admin only."""
+    require_admin(current_user)
+
+    query = select(User).order_by(User.created_at.desc())
+
+    if search:
+        query = query.where(
+            (User.login.ilike(f"%{search}%")) |
+            (User.nickname.ilike(f"%{search}%"))
+        )
+
+    query = query.offset(skip).limit(limit)
+    result = await db.execute(query)
+    users = result.scalars().all()
+
+    response = []
+    for user in users:
+        # Count marathons user participates in
+        marathons_count = await db.scalar(
+            select(func.count()).select_from(Participant).where(Participant.user_id == user.id)
+        )
+        response.append(AdminUserResponse(
+            id=user.id,
+            login=user.login,
+            nickname=user.nickname,
+            role=user.role,
+            avatar_url=user.avatar_url,
+            telegram_id=user.telegram_id,
+            telegram_username=user.telegram_username,
+            marathons_count=marathons_count,
+            created_at=user.created_at.isoformat(),
+        ))
+
+    return response
+
+
+@router.get("/users/{user_id}", response_model=AdminUserResponse)
+async def get_user(user_id: int, current_user: CurrentUser, db: DbSession):
+    """Get user details. Admin only."""
+    require_admin(current_user)
+
+    result = await db.execute(select(User).where(User.id == user_id))
+    user = result.scalar_one_or_none()
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    marathons_count = await db.scalar(
+        select(func.count()).select_from(Participant).where(Participant.user_id == user.id)
+    )
+
+    return AdminUserResponse(
+        id=user.id,
+        login=user.login,
+        nickname=user.nickname,
+        role=user.role,
+        avatar_url=user.avatar_url,
+        telegram_id=user.telegram_id,
+        telegram_username=user.telegram_username,
+        marathons_count=marathons_count,
+        created_at=user.created_at.isoformat(),
+    )
+
+
+@router.patch("/users/{user_id}/role", response_model=AdminUserResponse)
+async def set_user_role(
+    user_id: int,
+    data: SetUserRole,
+    current_user: CurrentUser,
+    db: DbSession,
+):
+    """Set user's global role. Admin only."""
+    require_admin(current_user)
+
+    # Cannot change own role
+    if user_id == current_user.id:
+        raise HTTPException(status_code=400, detail="Cannot change your own role")
+
+    result = await db.execute(select(User).where(User.id == user_id))
+    user = result.scalar_one_or_none()
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    user.role = data.role
+    await db.commit()
+    await db.refresh(user)
+
+    marathons_count = await db.scalar(
+        select(func.count()).select_from(Participant).where(Participant.user_id == user.id)
+    )
+
+    return AdminUserResponse(
+        id=user.id,
+        login=user.login,
+        nickname=user.nickname,
+        role=user.role,
+        avatar_url=user.avatar_url,
+        telegram_id=user.telegram_id,
+        telegram_username=user.telegram_username,
+        marathons_count=marathons_count,
+        created_at=user.created_at.isoformat(),
+    )
+
+
+@router.delete("/users/{user_id}", response_model=MessageResponse)
+async def delete_user(user_id: int, current_user: CurrentUser, db: DbSession):
+    """Delete a user. Admin only."""
+    require_admin(current_user)
+
+    # Cannot delete yourself
+    if user_id == current_user.id:
+        raise HTTPException(status_code=400, detail="Cannot delete yourself")
+
+    result = await db.execute(select(User).where(User.id == user_id))
+    user = result.scalar_one_or_none()
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    # Cannot delete another admin
+    if user.role == UserRole.ADMIN.value:
+        raise HTTPException(status_code=400, detail="Cannot delete another admin")
+
+    await db.delete(user)
+    await db.commit()
+
+    return MessageResponse(message="User deleted")
+
+
+@router.get("/marathons", response_model=list[AdminMarathonResponse])
+async def list_marathons(
+    current_user: CurrentUser,
+    db: DbSession,
+    skip: int = Query(0, ge=0),
+    limit: int = Query(50, ge=1, le=100),
+    search: str | None = None,
+):
+    """List all marathons. Admin only."""
+    require_admin(current_user)
+
+    query = (
+        select(Marathon)
+        .options(selectinload(Marathon.creator))
+        .order_by(Marathon.created_at.desc())
+    )
+
+    if search:
+        query = query.where(Marathon.title.ilike(f"%{search}%"))
+
+    query = query.offset(skip).limit(limit)
+    result = await db.execute(query)
+    marathons = result.scalars().all()
+
+    response = []
+    for marathon in marathons:
+        participants_count = await db.scalar(
+            select(func.count()).select_from(Participant).where(Participant.marathon_id == marathon.id)
+        )
+        games_count = await db.scalar(
+            select(func.count()).select_from(Game).where(Game.marathon_id == marathon.id)
+        )
+        response.append(AdminMarathonResponse(
+            id=marathon.id,
+            title=marathon.title,
+            status=marathon.status,
+            creator=UserPublic.model_validate(marathon.creator),
+            participants_count=participants_count,
+            games_count=games_count,
+            start_date=marathon.start_date.isoformat() if marathon.start_date else None,
+            end_date=marathon.end_date.isoformat() if marathon.end_date else None,
+            created_at=marathon.created_at.isoformat(),
+        ))
+
+    return response
+
+
+@router.delete("/marathons/{marathon_id}", response_model=MessageResponse)
+async def delete_marathon(marathon_id: int, current_user: CurrentUser, db: DbSession):
+    """Delete a marathon. Admin only."""
+    require_admin(current_user)
+
+    result = await db.execute(select(Marathon).where(Marathon.id == marathon_id))
+    marathon = result.scalar_one_or_none()
+    if not marathon:
+        raise HTTPException(status_code=404, detail="Marathon not found")
+
+    await db.delete(marathon)
+    await db.commit()
+
+    return MessageResponse(message="Marathon deleted")
+
+
+@router.get("/stats")
+async def get_stats(current_user: CurrentUser, db: DbSession):
+    """Get platform statistics. Admin only."""
+    require_admin(current_user)
+
+    users_count = await db.scalar(select(func.count()).select_from(User))
+    marathons_count = await db.scalar(select(func.count()).select_from(Marathon))
+    games_count = await db.scalar(select(func.count()).select_from(Game))
+    participants_count = await db.scalar(select(func.count()).select_from(Participant))
+
+    return {
+        "users_count": users_count,
+        "marathons_count": marathons_count,
+        "games_count": games_count,
+        "total_participations": participants_count,
+    }
--- a/backend/app/api/v1/challenges.py
+++ b/backend/app/api/v1/challenges.py
@@ -2,8 +2,8 @@ from fastapi import APIRouter, HTTPException
 from sqlalchemy import select
 from sqlalchemy.orm import selectinload

-from app.api.deps import DbSession, CurrentUser
-from app.models import Marathon, MarathonStatus, Game, Challenge, Participant
+from app.api.deps import DbSession, CurrentUser, require_participant, require_organizer, get_participant
+from app.models import Marathon, MarathonStatus, Game, GameStatus, Challenge
 from app.schemas import (
    ChallengeCreate,
    ChallengeUpdate,
@@ -33,21 +33,9 @@ async def get_challenge_or_404(db, challenge_id: int) -> Challenge:
    return challenge


-async def check_participant(db, user_id: int, marathon_id: int) -> Participant:
-    result = await db.execute(
-        select(Participant).where(
-            Participant.user_id == user_id,
-            Participant.marathon_id == marathon_id,
-        )
-    )
-    participant = result.scalar_one_or_none()
-    if not participant:
-        raise HTTPException(status_code=403, detail="You are not a participant of this marathon")
-    return participant
-
-
@router.get("/games/{game_id}/challenges", response_model=list[ChallengeResponse])
 async def list_challenges(game_id: int, current_user: CurrentUser, db: DbSession):
+    """List challenges for a game. Participants can view challenges for approved games only."""
    # Get game and check access
    result = await db.execute(
        select(Game).where(Game.id == game_id)
@@ -56,7 +44,16 @@ async def list_challenges(game_id: int, current_user: CurrentUser, db: DbSession
    if not game:
        raise HTTPException(status_code=404, detail="Game not found")

-    await check_participant(db, current_user.id, game.marathon_id)
+    participant = await get_participant(db, current_user.id, game.marathon_id)
+
+    # Check access
+    if not current_user.is_admin:
+        if not participant:
+            raise HTTPException(status_code=403, detail="You are not a participant of this marathon")
+        # Regular participants can only see challenges for approved games or their own games
+        if not participant.is_organizer:
+            if game.status != GameStatus.APPROVED.value and game.proposed_by_id != current_user.id:
+                raise HTTPException(status_code=403, detail="Game not accessible")

    result = await db.execute(
        select(Challenge)
@@ -91,6 +88,7 @@ async def create_challenge(
    current_user: CurrentUser,
    db: DbSession,
 ):
+    """Create a challenge for a game. Organizers only."""
    # Get game and check access
    result = await db.execute(
        select(Game).where(Game.id == game_id)
@@ -105,7 +103,12 @@ async def create_challenge(
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot add challenges to active or finished marathon")

-    await check_participant(db, current_user.id, game.marathon_id)
+    # Only organizers can add challenges
+    await require_organizer(db, current_user, game.marathon_id)
+
+    # Can only add challenges to approved games
+    if game.status != GameStatus.APPROVED.value:
+        raise HTTPException(status_code=400, detail="Can only add challenges to approved games")

    challenge = Challenge(
        game_id=game_id,
@@ -141,7 +144,7 @@ async def create_challenge(

@router.post("/marathons/{marathon_id}/preview-challenges", response_model=ChallengesPreviewResponse)
 async def preview_challenges(marathon_id: int, current_user: CurrentUser, db: DbSession):
-    """Generate challenges preview for all games in marathon using GPT (without saving)"""
+    """Generate challenges preview for approved games in marathon using GPT (without saving). Organizers only."""
    # Check marathon
    result = await db.execute(select(Marathon).where(Marathon.id == marathon_id))
    marathon = result.scalar_one_or_none()
@@ -151,16 +154,20 @@ async def preview_challenges(marathon_id: int, current_user: CurrentUser, db: Db
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot generate challenges for active or finished marathon")

-    await check_participant(db, current_user.id, marathon_id)
+    # Only organizers can generate challenges
+    await require_organizer(db, current_user, marathon_id)

-    # Get all games
+    # Get only APPROVED games
    result = await db.execute(
-        select(Game).where(Game.marathon_id == marathon_id)
+        select(Game).where(
+            Game.marathon_id == marathon_id,
+            Game.status == GameStatus.APPROVED.value,
+        )
    )
    games = result.scalars().all()

    if not games:
-        raise HTTPException(status_code=400, detail="No games in marathon")
+        raise HTTPException(status_code=400, detail="No approved games in marathon")

    preview_challenges = []
    for game in games:
@@ -202,7 +209,7 @@ async def save_challenges(
    current_user: CurrentUser,
    db: DbSession,
 ):
-    """Save previewed challenges to database"""
+    """Save previewed challenges to database. Organizers only."""
    # Check marathon
    result = await db.execute(select(Marathon).where(Marathon.id == marathon_id))
    marathon = result.scalar_one_or_none()
@@ -212,18 +219,22 @@ async def save_challenges(
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot add challenges to active or finished marathon")

-    await check_participant(db, current_user.id, marathon_id)
+    # Only organizers can save challenges
+    await require_organizer(db, current_user, marathon_id)

-    # Verify all games belong to this marathon
+    # Verify all games belong to this marathon AND are approved
    result = await db.execute(
-        select(Game.id).where(Game.marathon_id == marathon_id)
+        select(Game.id).where(
+            Game.marathon_id == marathon_id,
+            Game.status == GameStatus.APPROVED.value,
+        )
    )
    valid_game_ids = set(row[0] for row in result.fetchall())

    saved_count = 0
    for ch_data in data.challenges:
        if ch_data.game_id not in valid_game_ids:
-            continue  # Skip challenges for invalid games
+            continue  # Skip challenges for invalid/unapproved games

        # Validate type
        ch_type = ch_data.type
@@ -267,6 +278,7 @@ async def update_challenge(
    current_user: CurrentUser,
    db: DbSession,
 ):
+    """Update a challenge. Organizers only."""
    challenge = await get_challenge_or_404(db, challenge_id)

    # Check marathon is in preparing state
@@ -275,7 +287,8 @@ async def update_challenge(
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot update challenges in active or finished marathon")

-    await check_participant(db, current_user.id, challenge.game.marathon_id)
+    # Only organizers can update challenges
+    await require_organizer(db, current_user, challenge.game.marathon_id)

    if data.title is not None:
        challenge.title = data.title
@@ -316,6 +329,7 @@ async def update_challenge(

@router.delete("/challenges/{challenge_id}", response_model=MessageResponse)
 async def delete_challenge(challenge_id: int, current_user: CurrentUser, db: DbSession):
+    """Delete a challenge. Organizers only."""
    challenge = await get_challenge_or_404(db, challenge_id)

    # Check marathon is in preparing state
@@ -324,7 +338,8 @@ async def delete_challenge(challenge_id: int, current_user: CurrentUser, db: DbS
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot delete challenges from active or finished marathon")

-    await check_participant(db, current_user.id, challenge.game.marathon_id)
+    # Only organizers can delete challenges
+    await require_organizer(db, current_user, challenge.game.marathon_id)

    await db.delete(challenge)
    await db.commit()
--- a/backend/app/api/v1/games.py
+++ b/backend/app/api/v1/games.py
@@ -1,12 +1,15 @@
-from fastapi import APIRouter, HTTPException, status, UploadFile, File
+from fastapi import APIRouter, HTTPException, status, UploadFile, File, Query
 from sqlalchemy import select, func
 from sqlalchemy.orm import selectinload
 import uuid
 from pathlib import Path

-from app.api.deps import DbSession, CurrentUser
+from app.api.deps import (
+    DbSession, CurrentUser,
+    require_participant, require_organizer, get_participant,
+)
 from app.core.config import settings
-from app.models import Marathon, MarathonStatus, Game, Challenge, Participant
+from app.models import Marathon, MarathonStatus, GameProposalMode, Game, GameStatus, Challenge, Activity, ActivityType
 from app.schemas import GameCreate, GameUpdate, GameResponse, MessageResponse, UserPublic

 router = APIRouter(tags=["games"])
@@ -15,7 +18,10 @@ router = APIRouter(tags=["games"])
 async def get_game_or_404(db, game_id: int) -> Game:
    result = await db.execute(
        select(Game)
-        .options(selectinload(Game.added_by_user))
+        .options(
+            selectinload(Game.proposed_by),
+            selectinload(Game.approved_by),
+        )
        .where(Game.id == game_id)
    )
    game = result.scalar_one_or_none()
@@ -24,47 +30,84 @@ async def get_game_or_404(db, game_id: int) -> Game:
    return game


-async def check_participant(db, user_id: int, marathon_id: int) -> Participant:
-    result = await db.execute(
-        select(Participant).where(
-            Participant.user_id == user_id,
-            Participant.marathon_id == marathon_id,
-        )
-    )
-    participant = result.scalar_one_or_none()
-    if not participant:
-        raise HTTPException(status_code=403, detail="You are not a participant of this marathon")
-    return participant
-
-
-@router.get("/marathons/{marathon_id}/games", response_model=list[GameResponse])
-async def list_games(marathon_id: int, current_user: CurrentUser, db: DbSession):
-    await check_participant(db, current_user.id, marathon_id)
-
-    result = await db.execute(
-        select(Game, func.count(Challenge.id).label("challenges_count"))
-        .outerjoin(Challenge)
-        .options(selectinload(Game.added_by_user))
-        .where(Game.marathon_id == marathon_id)
-        .group_by(Game.id)
-        .order_by(Game.created_at.desc())
-    )
-
-    games = []
-    for row in result.all():
-        game = row[0]
-        games.append(GameResponse(
+def game_to_response(game: Game, challenges_count: int = 0) -> GameResponse:
+    """Convert Game model to GameResponse schema"""
+    return GameResponse(
        id=game.id,
        title=game.title,
        cover_url=f"/uploads/covers/{game.cover_path.split('/')[-1]}" if game.cover_path else None,
        download_url=game.download_url,
        genre=game.genre,
-            added_by=UserPublic.model_validate(game.added_by_user) if game.added_by_user else None,
-            challenges_count=row[1],
+        status=game.status,
+        proposed_by=UserPublic.model_validate(game.proposed_by) if game.proposed_by else None,
+        approved_by=UserPublic.model_validate(game.approved_by) if game.approved_by else None,
+        challenges_count=challenges_count,
        created_at=game.created_at,
-        ))
+    )

-    return games
+
+@router.get("/marathons/{marathon_id}/games", response_model=list[GameResponse])
+async def list_games(
+    marathon_id: int,
+    current_user: CurrentUser,
+    db: DbSession,
+    status_filter: str | None = Query(None, alias="status"),
+):
+    """List games in marathon. Organizers/admins see all, participants see only approved."""
+    # Admins can view without being participant
+    participant = await get_participant(db, current_user.id, marathon_id)
+    if not participant and not current_user.is_admin:
+        raise HTTPException(status_code=403, detail="You are not a participant of this marathon")
+
+    query = (
+        select(Game, func.count(Challenge.id).label("challenges_count"))
+        .outerjoin(Challenge)
+        .options(
+            selectinload(Game.proposed_by),
+            selectinload(Game.approved_by),
+        )
+        .where(Game.marathon_id == marathon_id)
+        .group_by(Game.id)
+        .order_by(Game.created_at.desc())
+    )
+
+    # Filter by status if provided
+    is_organizer = current_user.is_admin or (participant and participant.is_organizer)
+    if status_filter:
+        query = query.where(Game.status == status_filter)
+    elif not is_organizer:
+        # Regular participants only see approved games + their own pending games
+        query = query.where(
+            (Game.status == GameStatus.APPROVED.value) |
+            (Game.proposed_by_id == current_user.id)
+        )
+
+    result = await db.execute(query)
+
+    return [game_to_response(row[0], row[1]) for row in result.all()]
+
+
+@router.get("/marathons/{marathon_id}/games/pending", response_model=list[GameResponse])
+async def list_pending_games(marathon_id: int, current_user: CurrentUser, db: DbSession):
+    """List pending games for moderation. Organizers only."""
+    await require_organizer(db, current_user, marathon_id)
+
+    result = await db.execute(
+        select(Game, func.count(Challenge.id).label("challenges_count"))
+        .outerjoin(Challenge)
+        .options(
+            selectinload(Game.proposed_by),
+            selectinload(Game.approved_by),
+        )
+        .where(
+            Game.marathon_id == marathon_id,
+            Game.status == GameStatus.PENDING.value,
+        )
+        .group_by(Game.id)
+        .order_by(Game.created_at.desc())
+    )
+
+    return [game_to_response(row[0], row[1]) for row in result.all()]


@router.post("/marathons/{marathon_id}/games", response_model=GameResponse)
@@ -74,6 +117,7 @@ async def add_game(
    current_user: CurrentUser,
    db: DbSession,
 ):
+    """Propose a new game. Organizers can auto-approve."""
    # Check marathon exists and is preparing
    result = await db.execute(select(Marathon).where(Marathon.id == marathon_id))
    marathon = result.scalar_one_or_none()
@@ -83,16 +127,36 @@ async def add_game(
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot add games to active or finished marathon")

-    await check_participant(db, current_user.id, marathon_id)
+    participant = await require_participant(db, current_user.id, marathon_id)
+
+    # Check if user can propose games based on marathon settings
+    is_organizer = participant.is_organizer or current_user.is_admin
+    if marathon.game_proposal_mode == GameProposalMode.ORGANIZER_ONLY.value and not is_organizer:
+        raise HTTPException(status_code=403, detail="Only organizers can add games to this marathon")
+
+    # Organizers can auto-approve their games
+    game_status = GameStatus.APPROVED.value if is_organizer else GameStatus.PENDING.value

    game = Game(
        marathon_id=marathon_id,
        title=data.title,
        download_url=data.download_url,
        genre=data.genre,
-        added_by_id=current_user.id,
+        proposed_by_id=current_user.id,
+        status=game_status,
+        approved_by_id=current_user.id if is_organizer else None,
    )
    db.add(game)
+
+    # Log activity
+    activity = Activity(
+        marathon_id=marathon_id,
+        user_id=current_user.id,
+        type=ActivityType.ADD_GAME.value,
+        data={"title": game.title, "status": game_status},
+    )
+    db.add(activity)
+
    await db.commit()
    await db.refresh(game)

@@ -102,7 +166,9 @@ async def add_game(
        cover_url=None,
        download_url=game.download_url,
        genre=game.genre,
-        added_by=UserPublic.model_validate(current_user),
+        status=game.status,
+        proposed_by=UserPublic.model_validate(current_user),
+        approved_by=UserPublic.model_validate(current_user) if is_organizer else None,
        challenges_count=0,
        created_at=game.created_at,
    )
@@ -111,22 +177,21 @@ async def add_game(
@router.get("/games/{game_id}", response_model=GameResponse)
 async def get_game(game_id: int, current_user: CurrentUser, db: DbSession):
    game = await get_game_or_404(db, game_id)
-    await check_participant(db, current_user.id, game.marathon_id)
+    participant = await get_participant(db, current_user.id, game.marathon_id)
+
+    # Check access: organizers see all, participants see approved + own
+    if not current_user.is_admin:
+        if not participant:
+            raise HTTPException(status_code=403, detail="You are not a participant of this marathon")
+        if not participant.is_organizer:
+            if game.status != GameStatus.APPROVED.value and game.proposed_by_id != current_user.id:
+                raise HTTPException(status_code=403, detail="Game not found")

    challenges_count = await db.scalar(
        select(func.count()).select_from(Challenge).where(Challenge.game_id == game_id)
    )

-    return GameResponse(
-        id=game.id,
-        title=game.title,
-        cover_url=f"/uploads/covers/{game.cover_path.split('/')[-1]}" if game.cover_path else None,
-        download_url=game.download_url,
-        genre=game.genre,
-        added_by=UserPublic.model_validate(game.added_by_user) if game.added_by_user else None,
-        challenges_count=challenges_count,
-        created_at=game.created_at,
-    )
+    return game_to_response(game, challenges_count)


@router.patch("/games/{game_id}", response_model=GameResponse)
@@ -144,9 +209,16 @@ async def update_game(
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot update games in active or finished marathon")

-    # Only the one who added or organizer can update
-    if game.added_by_id != current_user.id and marathon.organizer_id != current_user.id:
-        raise HTTPException(status_code=403, detail="Only the one who added the game or organizer can update it")
+    participant = await get_participant(db, current_user.id, game.marathon_id)
+
+    # Only the one who proposed, organizers, or admin can update
+    can_update = (
+        current_user.is_admin or
+        (participant and participant.is_organizer) or
+        game.proposed_by_id == current_user.id
+    )
+    if not can_update:
+        raise HTTPException(status_code=403, detail="Only the one who proposed the game or organizer can update it")

    if data.title is not None:
        game.title = data.title
@@ -170,9 +242,16 @@ async def delete_game(game_id: int, current_user: CurrentUser, db: DbSession):
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot delete games from active or finished marathon")

-    # Only the one who added or organizer can delete
-    if game.added_by_id != current_user.id and marathon.organizer_id != current_user.id:
-        raise HTTPException(status_code=403, detail="Only the one who added the game or organizer can delete it")
+    participant = await get_participant(db, current_user.id, game.marathon_id)
+
+    # Only the one who proposed, organizers, or admin can delete
+    can_delete = (
+        current_user.is_admin or
+        (participant and participant.is_organizer) or
+        game.proposed_by_id == current_user.id
+    )
+    if not can_delete:
+        raise HTTPException(status_code=403, detail="Only the one who proposed the game or organizer can delete it")

    await db.delete(game)
    await db.commit()
@@ -180,6 +259,73 @@ async def delete_game(game_id: int, current_user: CurrentUser, db: DbSession):
    return MessageResponse(message="Game deleted")


+@router.post("/games/{game_id}/approve", response_model=GameResponse)
+async def approve_game(game_id: int, current_user: CurrentUser, db: DbSession):
+    """Approve a pending game. Organizers only."""
+    game = await get_game_or_404(db, game_id)
+
+    await require_organizer(db, current_user, game.marathon_id)
+
+    if game.status != GameStatus.PENDING.value:
+        raise HTTPException(status_code=400, detail="Game is not pending")
+
+    game.status = GameStatus.APPROVED.value
+    game.approved_by_id = current_user.id
+
+    # Log activity
+    activity = Activity(
+        marathon_id=game.marathon_id,
+        user_id=current_user.id,
+        type=ActivityType.APPROVE_GAME.value,
+        data={"title": game.title},
+    )
+    db.add(activity)
+
+    await db.commit()
+    await db.refresh(game)
+
+    # Need to reload relationships
+    game = await get_game_or_404(db, game_id)
+    challenges_count = await db.scalar(
+        select(func.count()).select_from(Challenge).where(Challenge.game_id == game_id)
+    )
+
+    return game_to_response(game, challenges_count)
+
+
+@router.post("/games/{game_id}/reject", response_model=GameResponse)
+async def reject_game(game_id: int, current_user: CurrentUser, db: DbSession):
+    """Reject a pending game. Organizers only."""
+    game = await get_game_or_404(db, game_id)
+
+    await require_organizer(db, current_user, game.marathon_id)
+
+    if game.status != GameStatus.PENDING.value:
+        raise HTTPException(status_code=400, detail="Game is not pending")
+
+    game.status = GameStatus.REJECTED.value
+
+    # Log activity
+    activity = Activity(
+        marathon_id=game.marathon_id,
+        user_id=current_user.id,
+        type=ActivityType.REJECT_GAME.value,
+        data={"title": game.title},
+    )
+    db.add(activity)
+
+    await db.commit()
+    await db.refresh(game)
+
+    # Need to reload relationships
+    game = await get_game_or_404(db, game_id)
+    challenges_count = await db.scalar(
+        select(func.count()).select_from(Challenge).where(Challenge.game_id == game_id)
+    )
+
+    return game_to_response(game, challenges_count)
+
+
@router.post("/games/{game_id}/cover", response_model=GameResponse)
 async def upload_cover(
    game_id: int,
@@ -188,7 +334,7 @@ async def upload_cover(
    file: UploadFile = File(...),
 ):
    game = await get_game_or_404(db, game_id)
-    await check_participant(db, current_user.id, game.marathon_id)
+    await require_participant(db, current_user.id, game.marathon_id)

    # Validate file
    if not file.content_type.startswith("image/"):
--- a/backend/app/api/v1/marathons.py
+++ b/backend/app/api/v1/marathons.py
@@ -4,8 +4,15 @@ from fastapi import APIRouter, HTTPException, status
 from sqlalchemy import select, func
 from sqlalchemy.orm import selectinload

-from app.api.deps import DbSession, CurrentUser
-from app.models import Marathon, Participant, MarathonStatus, Game, Assignment, AssignmentStatus, Activity, ActivityType
+from app.api.deps import (
+    DbSession, CurrentUser,
+    require_participant, require_organizer, require_creator,
+    get_participant,
+)
+from app.models import (
+    Marathon, Participant, MarathonStatus, Game, GameStatus,
+    Assignment, AssignmentStatus, Activity, ActivityType, ParticipantRole,
+)
 from app.schemas import (
    MarathonCreate,
    MarathonUpdate,
@@ -17,6 +24,7 @@ from app.schemas import (
    LeaderboardEntry,
    MessageResponse,
    UserPublic,
+    SetParticipantRole,
 )

 router = APIRouter(prefix="/marathons", tags=["marathons"])
@@ -29,7 +37,7 @@ def generate_invite_code() -> str:
 async def get_marathon_or_404(db, marathon_id: int) -> Marathon:
    result = await db.execute(
        select(Marathon)
-        .options(selectinload(Marathon.organizer))
+        .options(selectinload(Marathon.creator))
        .where(Marathon.id == marathon_id)
    )
    marathon = result.scalar_one_or_none()
@@ -50,13 +58,24 @@ async def get_participation(db, user_id: int, marathon_id: int) -> Participant |

@router.get("", response_model=list[MarathonListItem])
 async def list_marathons(current_user: CurrentUser, db: DbSession):
-    """Get all marathons where user is participant or organizer"""
+    """Get all marathons where user is participant, creator, or public marathons"""
+    # Admin can see all marathons
+    if current_user.is_admin:
+        result = await db.execute(
+            select(Marathon, func.count(Participant.id).label("participants_count"))
+            .outerjoin(Participant)
+            .group_by(Marathon.id)
+            .order_by(Marathon.created_at.desc())
+        )
+    else:
+        # User can see: own marathons, participated marathons, and public marathons
        result = await db.execute(
            select(Marathon, func.count(Participant.id).label("participants_count"))
            .outerjoin(Participant)
            .where(
-            (Marathon.organizer_id == current_user.id) |
-            (Participant.user_id == current_user.id)
+                (Marathon.creator_id == current_user.id) |
+                (Participant.user_id == current_user.id) |
+                (Marathon.is_public == True)
            )
            .group_by(Marathon.id)
            .order_by(Marathon.created_at.desc())
@@ -69,6 +88,7 @@ async def list_marathons(current_user: CurrentUser, db: DbSession):
            id=marathon.id,
            title=marathon.title,
            status=marathon.status,
+            is_public=marathon.is_public,
            participants_count=row[1],
            start_date=marathon.start_date,
            end_date=marathon.end_date,
@@ -90,18 +110,21 @@ async def create_marathon(
    marathon = Marathon(
        title=data.title,
        description=data.description,
-        organizer_id=current_user.id,
+        creator_id=current_user.id,
        invite_code=generate_invite_code(),
+        is_public=data.is_public,
+        game_proposal_mode=data.game_proposal_mode,
        start_date=start_date,
        end_date=end_date,
    )
    db.add(marathon)
    await db.flush()

-    # Auto-add organizer as participant
+    # Auto-add creator as organizer participant
    participant = Participant(
        user_id=current_user.id,
        marathon_id=marathon.id,
+        role=ParticipantRole.ORGANIZER.value,  # Creator is organizer
    )
    db.add(participant)

@@ -112,9 +135,11 @@ async def create_marathon(
        id=marathon.id,
        title=marathon.title,
        description=marathon.description,
-        organizer=UserPublic.model_validate(current_user),
+        creator=UserPublic.model_validate(current_user),
        status=marathon.status,
        invite_code=marathon.invite_code,
+        is_public=marathon.is_public,
+        game_proposal_mode=marathon.game_proposal_mode,
        start_date=marathon.start_date,
        end_date=marathon.end_date,
        participants_count=1,
@@ -128,12 +153,15 @@ async def create_marathon(
 async def get_marathon(marathon_id: int, current_user: CurrentUser, db: DbSession):
    marathon = await get_marathon_or_404(db, marathon_id)

-    # Count participants and games
+    # Count participants and approved games
    participants_count = await db.scalar(
        select(func.count()).select_from(Participant).where(Participant.marathon_id == marathon_id)
    )
    games_count = await db.scalar(
-        select(func.count()).select_from(Game).where(Game.marathon_id == marathon_id)
+        select(func.count()).select_from(Game).where(
+            Game.marathon_id == marathon_id,
+            Game.status == GameStatus.APPROVED.value,
+        )
    )

    # Get user's participation
@@ -143,9 +171,11 @@ async def get_marathon(marathon_id: int, current_user: CurrentUser, db: DbSessio
        id=marathon.id,
        title=marathon.title,
        description=marathon.description,
-        organizer=UserPublic.model_validate(marathon.organizer),
+        creator=UserPublic.model_validate(marathon.creator),
        status=marathon.status,
        invite_code=marathon.invite_code,
+        is_public=marathon.is_public,
+        game_proposal_mode=marathon.game_proposal_mode,
        start_date=marathon.start_date,
        end_date=marathon.end_date,
        participants_count=participants_count,
@@ -162,11 +192,10 @@ async def update_marathon(
    current_user: CurrentUser,
    db: DbSession,
 ):
+    # Require organizer role
+    await require_organizer(db, current_user, marathon_id)
    marathon = await get_marathon_or_404(db, marathon_id)

-    if marathon.organizer_id != current_user.id:
-        raise HTTPException(status_code=403, detail="Only organizer can update marathon")
-
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Cannot update active or finished marathon")

@@ -177,6 +206,10 @@ async def update_marathon(
    if data.start_date is not None:
        # Strip timezone info for naive datetime columns
        marathon.start_date = data.start_date.replace(tzinfo=None) if data.start_date.tzinfo else data.start_date
+    if data.is_public is not None:
+        marathon.is_public = data.is_public
+    if data.game_proposal_mode is not None:
+        marathon.game_proposal_mode = data.game_proposal_mode

    await db.commit()

@@ -185,11 +218,10 @@ async def update_marathon(

@router.delete("/{marathon_id}", response_model=MessageResponse)
 async def delete_marathon(marathon_id: int, current_user: CurrentUser, db: DbSession):
+    # Only creator or admin can delete
+    await require_creator(db, current_user, marathon_id)
    marathon = await get_marathon_or_404(db, marathon_id)

-    if marathon.organizer_id != current_user.id:
-        raise HTTPException(status_code=403, detail="Only organizer can delete marathon")
-
    await db.delete(marathon)
    await db.commit()

@@ -198,20 +230,22 @@ async def delete_marathon(marathon_id: int, current_user: CurrentUser, db: DbSes

@router.post("/{marathon_id}/start", response_model=MarathonResponse)
 async def start_marathon(marathon_id: int, current_user: CurrentUser, db: DbSession):
+    # Require organizer role
+    await require_organizer(db, current_user, marathon_id)
    marathon = await get_marathon_or_404(db, marathon_id)

-    if marathon.organizer_id != current_user.id:
-        raise HTTPException(status_code=403, detail="Only organizer can start marathon")
-
    if marathon.status != MarathonStatus.PREPARING.value:
        raise HTTPException(status_code=400, detail="Marathon is not in preparing state")

-    # Check if there are games with challenges
+    # Check if there are approved games with challenges
    games_count = await db.scalar(
-        select(func.count()).select_from(Game).where(Game.marathon_id == marathon_id)
+        select(func.count()).select_from(Game).where(
+            Game.marathon_id == marathon_id,
+            Game.status == GameStatus.APPROVED.value,
+        )
    )
    if games_count == 0:
-        raise HTTPException(status_code=400, detail="Add at least one game before starting")
+        raise HTTPException(status_code=400, detail="Add and approve at least one game before starting")

    marathon.status = MarathonStatus.ACTIVE.value

@@ -231,11 +265,10 @@ async def start_marathon(marathon_id: int, current_user: CurrentUser, db: DbSess

@router.post("/{marathon_id}/finish", response_model=MarathonResponse)
 async def finish_marathon(marathon_id: int, current_user: CurrentUser, db: DbSession):
+    # Require organizer role
+    await require_organizer(db, current_user, marathon_id)
    marathon = await get_marathon_or_404(db, marathon_id)

-    if marathon.organizer_id != current_user.id:
-        raise HTTPException(status_code=403, detail="Only organizer can finish marathon")
-
    if marathon.status != MarathonStatus.ACTIVE.value:
        raise HTTPException(status_code=400, detail="Marathon is not active")

@@ -276,6 +309,44 @@ async def join_marathon(data: JoinMarathon, current_user: CurrentUser, db: DbSes
    participant = Participant(
        user_id=current_user.id,
        marathon_id=marathon.id,
+        role=ParticipantRole.PARTICIPANT.value,  # Regular participant
+    )
+    db.add(participant)
+
+    # Log activity
+    activity = Activity(
+        marathon_id=marathon.id,
+        user_id=current_user.id,
+        type=ActivityType.JOIN.value,
+        data={"nickname": current_user.nickname},
+    )
+    db.add(activity)
+
+    await db.commit()
+
+    return await get_marathon(marathon.id, current_user, db)
+
+
+@router.post("/{marathon_id}/join", response_model=MarathonResponse)
+async def join_public_marathon(marathon_id: int, current_user: CurrentUser, db: DbSession):
+    """Join a public marathon without invite code"""
+    marathon = await get_marathon_or_404(db, marathon_id)
+
+    if not marathon.is_public:
+        raise HTTPException(status_code=403, detail="This marathon is private. Use invite code to join.")
+
+    if marathon.status == MarathonStatus.FINISHED.value:
+        raise HTTPException(status_code=400, detail="Marathon has already finished")
+
+    # Check if already participant
+    existing = await get_participation(db, current_user.id, marathon.id)
+    if existing:
+        raise HTTPException(status_code=400, detail="Already joined this marathon")
+
+    participant = Participant(
+        user_id=current_user.id,
+        marathon_id=marathon.id,
+        role=ParticipantRole.PARTICIPANT.value,
    )
    db.add(participant)

@@ -308,6 +379,7 @@ async def get_participants(marathon_id: int, current_user: CurrentUser, db: DbSe
    return [
        ParticipantWithUser(
            id=p.id,
+            role=p.role,
            total_points=p.total_points,
            current_streak=p.current_streak,
            drop_count=p.drop_count,
@@ -318,6 +390,50 @@ async def get_participants(marathon_id: int, current_user: CurrentUser, db: DbSe
    ]


+@router.patch("/{marathon_id}/participants/{user_id}/role", response_model=ParticipantWithUser)
+async def set_participant_role(
+    marathon_id: int,
+    user_id: int,
+    data: SetParticipantRole,
+    current_user: CurrentUser,
+    db: DbSession,
+):
+    """Set participant's role (only creator can do this)"""
+    # Only creator can change roles
+    marathon = await require_creator(db, current_user, marathon_id)
+
+    # Cannot change creator's role
+    if user_id == marathon.creator_id:
+        raise HTTPException(status_code=400, detail="Cannot change creator's role")
+
+    # Get participant
+    result = await db.execute(
+        select(Participant)
+        .options(selectinload(Participant.user))
+        .where(
+            Participant.marathon_id == marathon_id,
+            Participant.user_id == user_id,
+        )
+    )
+    participant = result.scalar_one_or_none()
+    if not participant:
+        raise HTTPException(status_code=404, detail="Participant not found")
+
+    participant.role = data.role
+    await db.commit()
+    await db.refresh(participant)
+
+    return ParticipantWithUser(
+        id=participant.id,
+        role=participant.role,
+        total_points=participant.total_points,
+        current_streak=participant.current_streak,
+        drop_count=participant.drop_count,
+        joined_at=participant.joined_at,
+        user=UserPublic.model_validate(participant.user),
+    )
+
+
@router.get("/{marathon_id}/leaderboard", response_model=list[LeaderboardEntry])
 async def get_leaderboard(marathon_id: int, db: DbSession):
    await get_marathon_or_404(db, marathon_id)
--- a/backend/app/models/init.py
+++ b/backend/app/models/init.py
@@ -1,17 +1,21 @@
-from app.models.user import User
-from app.models.marathon import Marathon, MarathonStatus
-from app.models.participant import Participant
-from app.models.game import Game
+from app.models.user import User, UserRole
+from app.models.marathon import Marathon, MarathonStatus, GameProposalMode
+from app.models.participant import Participant, ParticipantRole
+from app.models.game import Game, GameStatus
 from app.models.challenge import Challenge, ChallengeType, Difficulty, ProofType
 from app.models.assignment import Assignment, AssignmentStatus
 from app.models.activity import Activity, ActivityType

 __all__ = [
    "User",
+    "UserRole",
    "Marathon",
    "MarathonStatus",
+    "GameProposalMode",
    "Participant",
+    "ParticipantRole",
    "Game",
+    "GameStatus",
    "Challenge",
    "ChallengeType",
    "Difficulty",
--- a/backend/app/models/activity.py
+++ b/backend/app/models/activity.py
@@ -13,6 +13,9 @@ class ActivityType(str, Enum):
    DROP = "drop"
    START_MARATHON = "start_marathon"
    FINISH_MARATHON = "finish_marathon"
+    ADD_GAME = "add_game"
+    APPROVE_GAME = "approve_game"
+    REJECT_GAME = "reject_game"


 class Activity(Base):
--- a/backend/app/models/game.py
+++ b/backend/app/models/game.py
@@ -1,10 +1,17 @@
 from datetime import datetime
+from enum import Enum
 from sqlalchemy import String, DateTime, ForeignKey, Text
 from sqlalchemy.orm import Mapped, mapped_column, relationship

 from app.core.database import Base


+class GameStatus(str, Enum):
+    PENDING = "pending"      # Предложена участником, ждёт модерации
+    APPROVED = "approved"    # Одобрена организатором
+    REJECTED = "rejected"    # Отклонена
+
+
 class Game(Base):
    __tablename__ = "games"

@@ -14,14 +21,33 @@ class Game(Base):
    cover_path: Mapped[str | None] = mapped_column(String(500), nullable=True)
    download_url: Mapped[str] = mapped_column(Text, nullable=False)
    genre: Mapped[str | None] = mapped_column(String(50), nullable=True)
-    added_by_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="SET NULL"), nullable=True)
+    status: Mapped[str] = mapped_column(String(20), default=GameStatus.PENDING.value)
+    proposed_by_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="SET NULL"), nullable=True)
+    approved_by_id: Mapped[int | None] = mapped_column(ForeignKey("users.id", ondelete="SET NULL"), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)

    # Relationships
    marathon: Mapped["Marathon"] = relationship("Marathon", back_populates="games")
-    added_by_user: Mapped["User"] = relationship("User", back_populates="added_games")
+    proposed_by: Mapped["User"] = relationship(
+        "User",
+        back_populates="proposed_games",
+        foreign_keys=[proposed_by_id]
+    )
+    approved_by: Mapped["User | None"] = relationship(
+        "User",
+        back_populates="approved_games",
+        foreign_keys=[approved_by_id]
+    )
    challenges: Mapped[list["Challenge"]] = relationship(
        "Challenge",
        back_populates="game",
        cascade="all, delete-orphan"
    )
+
+    @property
+    def is_approved(self) -> bool:
+        return self.status == GameStatus.APPROVED.value
+
+    @property
+    def is_pending(self) -> bool:
+        return self.status == GameStatus.PENDING.value
--- a/backend/app/models/marathon.py
+++ b/backend/app/models/marathon.py
@@ -1,6 +1,6 @@
 from datetime import datetime
 from enum import Enum
-from sqlalchemy import String, Text, DateTime, ForeignKey, Integer
+from sqlalchemy import String, Text, DateTime, ForeignKey, Integer, Boolean
 from sqlalchemy.orm import Mapped, mapped_column, relationship

 from app.core.database import Base
@@ -12,24 +12,31 @@ class MarathonStatus(str, Enum):
    FINISHED = "finished"


+class GameProposalMode(str, Enum):
+    ALL_PARTICIPANTS = "all_participants"
+    ORGANIZER_ONLY = "organizer_only"
+
+
 class Marathon(Base):
    __tablename__ = "marathons"

    id: Mapped[int] = mapped_column(primary_key=True)
    title: Mapped[str] = mapped_column(String(100), nullable=False)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
-    organizer_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"))
+    creator_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"))
    status: Mapped[str] = mapped_column(String(20), default=MarathonStatus.PREPARING.value)
    invite_code: Mapped[str] = mapped_column(String(20), unique=True, nullable=False, index=True)
+    is_public: Mapped[bool] = mapped_column(Boolean, default=False)
+    game_proposal_mode: Mapped[str] = mapped_column(String(20), default=GameProposalMode.ALL_PARTICIPANTS.value)
    start_date: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    end_date: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)

    # Relationships
-    organizer: Mapped["User"] = relationship(
+    creator: Mapped["User"] = relationship(
        "User",
-        back_populates="organized_marathons",
-        foreign_keys=[organizer_id]
+        back_populates="created_marathons",
+        foreign_keys=[creator_id]
    )
    participants: Mapped[list["Participant"]] = relationship(
        "Participant",
--- a/backend/app/models/participant.py
+++ b/backend/app/models/participant.py
@@ -1,10 +1,16 @@
 from datetime import datetime
-from sqlalchemy import DateTime, ForeignKey, Integer, UniqueConstraint
+from enum import Enum
+from sqlalchemy import DateTime, ForeignKey, Integer, String, UniqueConstraint
 from sqlalchemy.orm import Mapped, mapped_column, relationship

 from app.core.database import Base


+class ParticipantRole(str, Enum):
+    PARTICIPANT = "participant"
+    ORGANIZER = "organizer"
+
+
 class Participant(Base):
    __tablename__ = "participants"
    __table_args__ = (
@@ -14,6 +20,7 @@ class Participant(Base):
    id: Mapped[int] = mapped_column(primary_key=True)
    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
    marathon_id: Mapped[int] = mapped_column(ForeignKey("marathons.id", ondelete="CASCADE"), index=True)
+    role: Mapped[str] = mapped_column(String(20), default=ParticipantRole.PARTICIPANT.value)
    total_points: Mapped[int] = mapped_column(Integer, default=0)
    current_streak: Mapped[int] = mapped_column(Integer, default=0)
    drop_count: Mapped[int] = mapped_column(Integer, default=0)  # For progressive penalty
@@ -27,3 +34,7 @@ class Participant(Base):
        back_populates="participant",
        cascade="all, delete-orphan"
    )
+
+    @property
+    def is_organizer(self) -> bool:
+        return self.role == ParticipantRole.ORGANIZER.value
--- a/backend/app/models/user.py
+++ b/backend/app/models/user.py
@@ -1,10 +1,16 @@
 from datetime import datetime
+from enum import Enum
 from sqlalchemy import String, BigInteger, DateTime
 from sqlalchemy.orm import Mapped, mapped_column, relationship

 from app.core.database import Base


+class UserRole(str, Enum):
+    USER = "user"
+    ADMIN = "admin"
+
+
 class User(Base):
    __tablename__ = "users"

@@ -15,19 +21,36 @@ class User(Base):
    avatar_path: Mapped[str | None] = mapped_column(String(500), nullable=True)
    telegram_id: Mapped[int | None] = mapped_column(BigInteger, unique=True, nullable=True)
    telegram_username: Mapped[str | None] = mapped_column(String(50), nullable=True)
+    role: Mapped[str] = mapped_column(String(20), default=UserRole.USER.value)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)

    # Relationships
-    organized_marathons: Mapped[list["Marathon"]] = relationship(
+    created_marathons: Mapped[list["Marathon"]] = relationship(
        "Marathon",
-        back_populates="organizer",
-        foreign_keys="Marathon.organizer_id"
+        back_populates="creator",
+        foreign_keys="Marathon.creator_id"
    )
    participations: Mapped[list["Participant"]] = relationship(
        "Participant",
        back_populates="user"
    )
-    added_games: Mapped[list["Game"]] = relationship(
+    proposed_games: Mapped[list["Game"]] = relationship(
        "Game",
-        back_populates="added_by_user"
+        back_populates="proposed_by",
+        foreign_keys="Game.proposed_by_id"
    )
+    approved_games: Mapped[list["Game"]] = relationship(
+        "Game",
+        back_populates="approved_by",
+        foreign_keys="Game.approved_by_id"
+    )
+
+    @property
+    def is_admin(self) -> bool:
+        return self.role == UserRole.ADMIN.value
+
+    @property
+    def avatar_url(self) -> str | None:
+        if self.avatar_path:
+            return f"/uploads/avatars/{self.avatar_path.split('/')[-1]}"
+        return None
--- a/backend/app/schemas/init.py
+++ b/backend/app/schemas/init.py
@@ -16,6 +16,7 @@ from app.schemas.marathon import (
    ParticipantWithUser,
    JoinMarathon,
    LeaderboardEntry,
+    SetParticipantRole,
 )
 from app.schemas.game import (
    GameCreate,
@@ -68,6 +69,7 @@ __all__ = [
    "ParticipantWithUser",
    "JoinMarathon",
    "LeaderboardEntry",
+    "SetParticipantRole",
    # Game
    "GameCreate",
    "GameUpdate",
--- a/backend/app/schemas/game.py
+++ b/backend/app/schemas/game.py
@@ -32,7 +32,9 @@ class GameShort(BaseModel):
 class GameResponse(GameBase):
    id: int
    cover_url: str | None = None
-    added_by: UserPublic | None = None
+    status: str = "pending"
+    proposed_by: UserPublic | None = None
+    approved_by: UserPublic | None = None
    challenges_count: int = 0
    created_at: datetime

--- a/backend/app/schemas/marathon.py
+++ b/backend/app/schemas/marathon.py
@@ -12,16 +12,21 @@ class MarathonBase(BaseModel):
 class MarathonCreate(MarathonBase):
    start_date: datetime
    duration_days: int = Field(default=30, ge=1, le=365)
+    is_public: bool = False
+    game_proposal_mode: str = Field(default="all_participants", pattern="^(all_participants|organizer_only)$")


 class MarathonUpdate(BaseModel):
    title: str | None = Field(None, min_length=1, max_length=100)
    description: str | None = None
    start_date: datetime | None = None
+    is_public: bool | None = None
+    game_proposal_mode: str | None = Field(None, pattern="^(all_participants|organizer_only)$")


 class ParticipantInfo(BaseModel):
    id: int
+    role: str = "participant"
    total_points: int
    current_streak: int
    drop_count: int
@@ -37,9 +42,11 @@ class ParticipantWithUser(ParticipantInfo):

 class MarathonResponse(MarathonBase):
    id: int
-    organizer: UserPublic
+    creator: UserPublic
    status: str
    invite_code: str
+    is_public: bool
+    game_proposal_mode: str
    start_date: datetime | None
    end_date: datetime | None
    participants_count: int
@@ -51,10 +58,15 @@ class MarathonResponse(MarathonBase):
        from_attributes = True


+class SetParticipantRole(BaseModel):
+    role: str = Field(..., pattern="^(participant|organizer)$")
+
+
 class MarathonListItem(BaseModel):
    id: int
    title: str
    status: str
+    is_public: bool
    participants_count: int
    start_date: datetime | None
    end_date: datetime | None
--- a/backend/app/schemas/user.py
+++ b/backend/app/schemas/user.py
@@ -32,6 +32,7 @@ class UserPublic(UserBase):
    id: int
    login: str
    avatar_url: str | None = None
+    role: str = "user"
    created_at: datetime

    class Config:
--- a/frontend/src/api/admin.ts
+++ b/frontend/src/api/admin.ts
@@ -0,0 +1,44 @@
+import client from './client'
+import type { AdminUser, AdminMarathon, UserRole, PlatformStats } from '@/types'
+
+export const adminApi = {
+  // Users
+  listUsers: async (skip = 0, limit = 50, search?: string): Promise<AdminUser[]> => {
+    const params: Record<string, unknown> = { skip, limit }
+    if (search) params.search = search
+    const response = await client.get<AdminUser[]>('/admin/users', { params })
+    return response.data
+  },
+
+  getUser: async (id: number): Promise<AdminUser> => {
+    const response = await client.get<AdminUser>(`/admin/users/${id}`)
+    return response.data
+  },
+
+  setUserRole: async (id: number, role: UserRole): Promise<AdminUser> => {
+    const response = await client.patch<AdminUser>(`/admin/users/${id}/role`, { role })
+    return response.data
+  },
+
+  deleteUser: async (id: number): Promise<void> => {
+    await client.delete(`/admin/users/${id}`)
+  },
+
+  // Marathons
+  listMarathons: async (skip = 0, limit = 50, search?: string): Promise<AdminMarathon[]> => {
+    const params: Record<string, unknown> = { skip, limit }
+    if (search) params.search = search
+    const response = await client.get<AdminMarathon[]>('/admin/marathons', { params })
+    return response.data
+  },
+
+  deleteMarathon: async (id: number): Promise<void> => {
+    await client.delete(`/admin/marathons/${id}`)
+  },
+
+  // Stats
+  getStats: async (): Promise<PlatformStats> => {
+    const response = await client.get<PlatformStats>('/admin/stats')
+    return response.data
+  },
+}
--- a/frontend/src/api/games.ts
+++ b/frontend/src/api/games.ts
@@ -1,5 +1,5 @@
 import client from './client'
-import type { Game, Challenge, ChallengePreview, ChallengesPreviewResponse } from '@/types'
+import type { Game, GameStatus, Challenge, ChallengePreview, ChallengesPreviewResponse } from '@/types'

 export interface CreateGameData {
  title: string
@@ -20,8 +20,14 @@ export interface CreateChallengeData {
 }

 export const gamesApi = {
-  list: async (marathonId: number): Promise<Game[]> => {
-    const response = await client.get<Game[]>(`/marathons/${marathonId}/games`)
+  list: async (marathonId: number, status?: GameStatus): Promise<Game[]> => {
+    const params = status ? { status } : {}
+    const response = await client.get<Game[]>(`/marathons/${marathonId}/games`, { params })
+    return response.data
+  },
+
+  listPending: async (marathonId: number): Promise<Game[]> => {
+    const response = await client.get<Game[]>(`/marathons/${marathonId}/games/pending`)
    return response.data
  },

@@ -39,6 +45,16 @@ export const gamesApi = {
    await client.delete(`/games/${id}`)
  },

+  approve: async (id: number): Promise<Game> => {
+    const response = await client.post<Game>(`/games/${id}/approve`)
+    return response.data
+  },
+
+  reject: async (id: number): Promise<Game> => {
+    const response = await client.post<Game>(`/games/${id}/reject`)
+    return response.data
+  },
+
  uploadCover: async (id: number, file: File): Promise<Game> => {
    const formData = new FormData()
    formData.append('file', file)
--- a/frontend/src/api/index.ts
+++ b/frontend/src/api/index.ts
@@ -3,3 +3,4 @@ export { marathonsApi } from './marathons'
 export { gamesApi } from './games'
 export { wheelApi } from './wheel'
 export { feedApi } from './feed'
+export { adminApi } from './admin'
--- a/frontend/src/api/marathons.ts
+++ b/frontend/src/api/marathons.ts
@@ -1,15 +1,13 @@
 import client from './client'
-import type { Marathon, MarathonListItem, LeaderboardEntry, ParticipantInfo, User } from '@/types'
+import type { Marathon, MarathonListItem, LeaderboardEntry, ParticipantWithUser, ParticipantRole, GameProposalMode } from '@/types'

 export interface CreateMarathonData {
  title: string
  description?: string
  start_date: string
  duration_days?: number
-}
-
-export interface ParticipantWithUser extends ParticipantInfo {
-  user: User
+  is_public?: boolean
+  game_proposal_mode?: GameProposalMode
 }

 export const marathonsApi = {
@@ -52,11 +50,24 @@ export const marathonsApi = {
    return response.data
  },

+  joinPublic: async (id: number): Promise<Marathon> => {
+    const response = await client.post<Marathon>(`/marathons/${id}/join`)
+    return response.data
+  },
+
  getParticipants: async (id: number): Promise<ParticipantWithUser[]> => {
    const response = await client.get<ParticipantWithUser[]>(`/marathons/${id}/participants`)
    return response.data
  },

+  setParticipantRole: async (marathonId: number, userId: number, role: ParticipantRole): Promise<ParticipantWithUser> => {
+    const response = await client.patch<ParticipantWithUser>(
+      `/marathons/${marathonId}/participants/${userId}/role`,
+      { role }
+    )
+    return response.data
+  },
+
  getLeaderboard: async (id: number): Promise<LeaderboardEntry[]> => {
    const response = await client.get<LeaderboardEntry[]>(`/marathons/${id}/leaderboard`)
    return response.data
--- a/frontend/src/pages/CreateMarathonPage.tsx
+++ b/frontend/src/pages/CreateMarathonPage.tsx
@@ -1,16 +1,20 @@
 import { useState } from 'react'
-import { useNavigate } from 'react-router-dom'
+import { useNavigate, Link } from 'react-router-dom'
 import { useForm } from 'react-hook-form'
 import { zodResolver } from '@hookform/resolvers/zod'
 import { z } from 'zod'
 import { marathonsApi } from '@/api'
 import { Button, Input, Card, CardHeader, CardTitle, CardContent } from '@/components/ui'
+import { Globe, Lock, Users, UserCog, ArrowLeft } from 'lucide-react'
+import type { GameProposalMode } from '@/types'

 const createSchema = z.object({
  title: z.string().min(1, 'Название обязательно').max(100),
  description: z.string().optional(),
  start_date: z.string().min(1, 'Дата начала обязательна'),
  duration_days: z.number().min(1).max(365).default(30),
+  is_public: z.boolean().default(false),
+  game_proposal_mode: z.enum(['all_participants', 'organizer_only']).default('all_participants'),
 })

 type CreateForm = z.infer<typeof createSchema>
@@ -23,21 +27,32 @@ export function CreateMarathonPage() {
  const {
    register,
    handleSubmit,
+    watch,
+    setValue,
    formState: { errors },
  } = useForm<CreateForm>({
    resolver: zodResolver(createSchema),
    defaultValues: {
      duration_days: 30,
+      is_public: false,
+      game_proposal_mode: 'all_participants',
    },
  })

+  const isPublic = watch('is_public')
+  const gameProposalMode = watch('game_proposal_mode')
+
  const onSubmit = async (data: CreateForm) => {
    setIsLoading(true)
    setError(null)
    try {
      const marathon = await marathonsApi.create({
-        ...data,
+        title: data.title,
+        description: data.description,
        start_date: new Date(data.start_date).toISOString(),
+        duration_days: data.duration_days,
+        is_public: data.is_public,
+        game_proposal_mode: data.game_proposal_mode as GameProposalMode,
      })
      navigate(`/marathons/${marathon.id}/lobby`)
    } catch (err: unknown) {
@@ -50,6 +65,12 @@ export function CreateMarathonPage() {

  return (
    <div className="max-w-lg mx-auto">
+      {/* Back button */}
+      <Link to="/marathons" className="inline-flex items-center gap-2 text-gray-400 hover:text-white mb-4 transition-colors">
+        <ArrowLeft className="w-4 h-4" />
+        К списку марафонов
+      </Link>
+
      <Card>
        <CardHeader>
          <CardTitle>Создать марафон</CardTitle>
@@ -94,6 +115,92 @@ export function CreateMarathonPage() {
              {...register('duration_days', { valueAsNumber: true })}
            />

+            {/* Тип марафона */}
+            <div>
+              <label className="block text-sm font-medium text-gray-300 mb-2">
+                Тип марафона
+              </label>
+              <div className="grid grid-cols-2 gap-3">
+                <button
+                  type="button"
+                  onClick={() => setValue('is_public', false)}
+                  className={`p-3 rounded-lg border-2 transition-all ${
+                    !isPublic
+                      ? 'border-primary-500 bg-primary-500/10'
+                      : 'border-gray-700 bg-gray-800 hover:border-gray-600'
+                  }`}
+                >
+                  <Lock className={`w-5 h-5 mx-auto mb-1 ${!isPublic ? 'text-primary-400' : 'text-gray-400'}`} />
+                  <div className={`text-sm font-medium ${!isPublic ? 'text-white' : 'text-gray-300'}`}>
+                    Закрытый
+                  </div>
+                  <div className="text-xs text-gray-500 mt-1">
+                    Вход по коду
+                  </div>
+                </button>
+                <button
+                  type="button"
+                  onClick={() => setValue('is_public', true)}
+                  className={`p-3 rounded-lg border-2 transition-all ${
+                    isPublic
+                      ? 'border-primary-500 bg-primary-500/10'
+                      : 'border-gray-700 bg-gray-800 hover:border-gray-600'
+                  }`}
+                >
+                  <Globe className={`w-5 h-5 mx-auto mb-1 ${isPublic ? 'text-primary-400' : 'text-gray-400'}`} />
+                  <div className={`text-sm font-medium ${isPublic ? 'text-white' : 'text-gray-300'}`}>
+                    Открытый
+                  </div>
+                  <div className="text-xs text-gray-500 mt-1">
+                    Виден всем
+                  </div>
+                </button>
+              </div>
+            </div>
+
+            {/* Кто может предлагать игры */}
+            <div>
+              <label className="block text-sm font-medium text-gray-300 mb-2">
+                Кто может предлагать игры
+              </label>
+              <div className="grid grid-cols-2 gap-3">
+                <button
+                  type="button"
+                  onClick={() => setValue('game_proposal_mode', 'all_participants')}
+                  className={`p-3 rounded-lg border-2 transition-all ${
+                    gameProposalMode === 'all_participants'
+                      ? 'border-primary-500 bg-primary-500/10'
+                      : 'border-gray-700 bg-gray-800 hover:border-gray-600'
+                  }`}
+                >
+                  <Users className={`w-5 h-5 mx-auto mb-1 ${gameProposalMode === 'all_participants' ? 'text-primary-400' : 'text-gray-400'}`} />
+                  <div className={`text-sm font-medium ${gameProposalMode === 'all_participants' ? 'text-white' : 'text-gray-300'}`}>
+                    Все участники
+                  </div>
+                  <div className="text-xs text-gray-500 mt-1">
+                    С модерацией
+                  </div>
+                </button>
+                <button
+                  type="button"
+                  onClick={() => setValue('game_proposal_mode', 'organizer_only')}
+                  className={`p-3 rounded-lg border-2 transition-all ${
+                    gameProposalMode === 'organizer_only'
+                      ? 'border-primary-500 bg-primary-500/10'
+                      : 'border-gray-700 bg-gray-800 hover:border-gray-600'
+                  }`}
+                >
+                  <UserCog className={`w-5 h-5 mx-auto mb-1 ${gameProposalMode === 'organizer_only' ? 'text-primary-400' : 'text-gray-400'}`} />
+                  <div className={`text-sm font-medium ${gameProposalMode === 'organizer_only' ? 'text-white' : 'text-gray-300'}`}>
+                    Только организатор
+                  </div>
+                  <div className="text-xs text-gray-500 mt-1">
+                    Без модерации
+                  </div>
+                </button>
+              </div>
+            </div>
+
            <div className="flex gap-3 pt-4">
              <Button
                type="button"
--- a/frontend/src/pages/LobbyPage.tsx
+++ b/frontend/src/pages/LobbyPage.tsx
@@ -1,10 +1,13 @@
 import { useState, useEffect } from 'react'
-import { useParams, useNavigate } from 'react-router-dom'
+import { useParams, useNavigate, Link } from 'react-router-dom'
 import { marathonsApi, gamesApi } from '@/api'
 import type { Marathon, Game, Challenge, ChallengePreview } from '@/types'
 import { Button, Input, Card, CardContent, CardHeader, CardTitle } from '@/components/ui'
 import { useAuthStore } from '@/store/auth'
-import { Plus, Trash2, Sparkles, Play, Loader2, Gamepad2, X, Save, Eye, ChevronDown, ChevronUp, Edit2, Check } from 'lucide-react'
+import {
+  Plus, Trash2, Sparkles, Play, Loader2, Gamepad2, X, Save, Eye,
+  ChevronDown, ChevronUp, Edit2, Check, CheckCircle, XCircle, Clock, User, ArrowLeft
+} from 'lucide-react'

 export function LobbyPage() {
  const { id } = useParams<{ id: string }>()
@@ -13,6 +16,7 @@ export function LobbyPage() {

  const [marathon, setMarathon] = useState<Marathon | null>(null)
  const [games, setGames] = useState<Game[]>([])
+  const [pendingGames, setPendingGames] = useState<Game[]>([])
  const [isLoading, setIsLoading] = useState(true)

  // Add game form
@@ -22,6 +26,9 @@ export function LobbyPage() {
  const [gameGenre, setGameGenre] = useState('')
  const [isAddingGame, setIsAddingGame] = useState(false)

+  // Moderation
+  const [moderatingGameId, setModeratingGameId] = useState<number | null>(null)
+
  // Generate challenges
  const [isGenerating, setIsGenerating] = useState(false)
  const [generateMessage, setGenerateMessage] = useState<string | null>(null)
@@ -44,12 +51,23 @@ export function LobbyPage() {
  const loadData = async () => {
    if (!id) return
    try {
-      const [marathonData, gamesData] = await Promise.all([
-        marathonsApi.get(parseInt(id)),
-        gamesApi.list(parseInt(id)),
-      ])
+      const marathonData = await marathonsApi.get(parseInt(id))
      setMarathon(marathonData)
+
+      // Load games - organizers see all, participants see approved + own
+      const gamesData = await gamesApi.list(parseInt(id))
      setGames(gamesData)
+
+      // If organizer, load pending games separately
+      if (marathonData.my_participation?.role === 'organizer' || user?.role === 'admin') {
+        try {
+          const pending = await gamesApi.listPending(parseInt(id))
+          setPendingGames(pending)
+        } catch {
+          // If not authorized, just ignore
+          setPendingGames([])
+        }
+      }
    } catch (error) {
      console.error('Failed to load data:', error)
      navigate('/marathons')
@@ -91,6 +109,32 @@ export function LobbyPage() {
    }
  }

+  const handleApproveGame = async (gameId: number) => {
+    setModeratingGameId(gameId)
+    try {
+      await gamesApi.approve(gameId)
+      await loadData()
+    } catch (error) {
+      console.error('Failed to approve game:', error)
+    } finally {
+      setModeratingGameId(null)
+    }
+  }
+
+  const handleRejectGame = async (gameId: number) => {
+    if (!confirm('Отклонить эту игру?')) return
+
+    setModeratingGameId(gameId)
+    try {
+      await gamesApi.reject(gameId)
+      await loadData()
+    } catch (error) {
+      console.error('Failed to reject game:', error)
+    } finally {
+      setModeratingGameId(null)
+    }
+  }
+
  const handleToggleGameChallenges = async (gameId: number) => {
    if (expandedGameId === gameId) {
      setExpandedGameId(null)
@@ -205,33 +249,206 @@ export function LobbyPage() {
    )
  }

-  const isOrganizer = user?.id === marathon.organizer.id
-  const totalChallenges = games.reduce((sum, g) => sum + g.challenges_count, 0)
+  const isOrganizer = marathon.my_participation?.role === 'organizer' || user?.role === 'admin'
+  const approvedGames = games.filter(g => g.status === 'approved')
+  const totalChallenges = approvedGames.reduce((sum, g) => sum + g.challenges_count, 0)
+
+  const getStatusBadge = (status: string) => {
+    switch (status) {
+      case 'approved':
+        return (
+          <span className="flex items-center gap-1 text-xs px-2 py-0.5 rounded bg-green-900/50 text-green-400">
+            <CheckCircle className="w-3 h-3" />
+            Одобрено
+          </span>
+        )
+      case 'pending':
+        return (
+          <span className="flex items-center gap-1 text-xs px-2 py-0.5 rounded bg-yellow-900/50 text-yellow-400">
+            <Clock className="w-3 h-3" />
+            На модерации
+          </span>
+        )
+      case 'rejected':
+        return (
+          <span className="flex items-center gap-1 text-xs px-2 py-0.5 rounded bg-red-900/50 text-red-400">
+            <XCircle className="w-3 h-3" />
+            Отклонено
+          </span>
+        )
+      default:
+        return null
+    }
+  }
+
+  const renderGameCard = (game: Game, showModeration = false) => (
+    <div key={game.id} className="bg-gray-900 rounded-lg overflow-hidden">
+      {/* Game header */}
+      <div
+        className={`flex items-center justify-between p-4 ${
+          game.challenges_count > 0 ? 'cursor-pointer hover:bg-gray-800/50' : ''
+        }`}
+        onClick={() => game.challenges_count > 0 && handleToggleGameChallenges(game.id)}
+      >
+        <div className="flex items-center gap-3 flex-1 min-w-0">
+          {game.challenges_count > 0 && (
+            <span className="text-gray-400 shrink-0">
+              {expandedGameId === game.id ? (
+                <ChevronUp className="w-4 h-4" />
+              ) : (
+                <ChevronDown className="w-4 h-4" />
+              )}
+            </span>
+          )}
+          <div className="flex-1 min-w-0">
+            <div className="flex items-center gap-2 flex-wrap">
+              <h4 className="font-medium text-white">{game.title}</h4>
+              {getStatusBadge(game.status)}
+            </div>
+            <div className="text-sm text-gray-400 flex items-center gap-3 flex-wrap">
+              {game.genre && <span>{game.genre}</span>}
+              {game.status === 'approved' && <span>{game.challenges_count} заданий</span>}
+              {game.proposed_by && (
+                <span className="flex items-center gap-1 text-gray-500">
+                  <User className="w-3 h-3" />
+                  {game.proposed_by.nickname}
+                </span>
+              )}
+            </div>
+          </div>
+        </div>
+        <div className="flex items-center gap-2 shrink-0" onClick={(e) => e.stopPropagation()}>
+          {showModeration && game.status === 'pending' && (
+            <>
+              <Button
+                variant="ghost"
+                size="sm"
+                onClick={() => handleApproveGame(game.id)}
+                disabled={moderatingGameId === game.id}
+                className="text-green-400 hover:text-green-300"
+              >
+                {moderatingGameId === game.id ? (
+                  <Loader2 className="w-4 h-4 animate-spin" />
+                ) : (
+                  <CheckCircle className="w-4 h-4" />
+                )}
+              </Button>
+              <Button
+                variant="ghost"
+                size="sm"
+                onClick={() => handleRejectGame(game.id)}
+                disabled={moderatingGameId === game.id}
+                className="text-red-400 hover:text-red-300"
+              >
+                <XCircle className="w-4 h-4" />
+              </Button>
+            </>
+          )}
+          {(isOrganizer || game.proposed_by?.id === user?.id) && (
+            <Button
+              variant="ghost"
+              size="sm"
+              onClick={() => handleDeleteGame(game.id)}
+              className="text-red-400 hover:text-red-300"
+            >
+              <Trash2 className="w-4 h-4" />
+            </Button>
+          )}
+        </div>
+      </div>
+
+      {/* Expanded challenges list */}
+      {expandedGameId === game.id && (
+        <div className="border-t border-gray-800 p-4 space-y-2">
+          {loadingChallenges === game.id ? (
+            <div className="flex justify-center py-4">
+              <Loader2 className="w-5 h-5 animate-spin text-gray-400" />
+            </div>
+          ) : gameChallenges[game.id]?.length > 0 ? (
+            gameChallenges[game.id].map((challenge) => (
+              <div
+                key={challenge.id}
+                className="flex items-start justify-between gap-3 p-3 bg-gray-800 rounded-lg"
+              >
+                <div className="flex-1 min-w-0">
+                  <div className="flex items-center gap-2 mb-1">
+                    <span className={`text-xs px-2 py-0.5 rounded ${
+                      challenge.difficulty === 'easy' ? 'bg-green-900/50 text-green-400' :
+                      challenge.difficulty === 'medium' ? 'bg-yellow-900/50 text-yellow-400' :
+                      'bg-red-900/50 text-red-400'
+                    }`}>
+                      {challenge.difficulty === 'easy' ? 'Легко' :
+                       challenge.difficulty === 'medium' ? 'Средне' : 'Сложно'}
+                    </span>
+                    <span className="text-xs text-primary-400 font-medium">
+                      +{challenge.points}
+                    </span>
+                    {challenge.is_generated && (
+                      <span className="text-xs text-gray-500">
+                        <Sparkles className="w-3 h-3 inline" /> ИИ
+                      </span>
+                    )}
+                  </div>
+                  <h5 className="text-sm font-medium text-white">{challenge.title}</h5>
+                  <p className="text-xs text-gray-400 mt-1">{challenge.description}</p>
+                </div>
+                {isOrganizer && (
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    onClick={() => handleDeleteChallenge(challenge.id, game.id)}
+                    className="text-red-400 hover:text-red-300 shrink-0"
+                  >
+                    <Trash2 className="w-3 h-3" />
+                  </Button>
+                )}
+              </div>
+            ))
+          ) : (
+            <p className="text-center text-gray-500 py-2 text-sm">
+              Нет заданий
+            </p>
+          )}
+        </div>
+      )}
+    </div>
+  )

  return (
    <div className="max-w-4xl mx-auto">
+      {/* Back button */}
+      <Link to={`/marathons/${id}`} className="inline-flex items-center gap-2 text-gray-400 hover:text-white mb-4 transition-colors">
+        <ArrowLeft className="w-4 h-4" />
+        К марафону
+      </Link>
+
      <div className="flex justify-between items-center mb-8">
        <div>
          <h1 className="text-2xl font-bold text-white">{marathon.title}</h1>
-          <p className="text-gray-400">Настройка - Добавьте игры и сгенерируйте задания</p>
+          <p className="text-gray-400">
+            {isOrganizer
+              ? 'Настройка - Добавьте игры и сгенерируйте задания'
+              : 'Предложите игры для марафона'}
+          </p>
        </div>

        {isOrganizer && (
-          <Button onClick={handleStartMarathon} isLoading={isStarting} disabled={games.length === 0}>
+          <Button onClick={handleStartMarathon} isLoading={isStarting} disabled={approvedGames.length === 0}>
            <Play className="w-4 h-4 mr-2" />
            Запустить марафон
          </Button>
        )}
      </div>

-      {/* Stats */}
+      {/* Stats - только для организаторов */}
+      {isOrganizer && (
        <div className="grid grid-cols-2 gap-4 mb-8">
          <Card>
            <CardContent className="text-center py-4">
-            <div className="text-2xl font-bold text-white">{games.length}</div>
+              <div className="text-2xl font-bold text-white">{approvedGames.length}</div>
              <div className="text-sm text-gray-400 flex items-center justify-center gap-1">
                <Gamepad2 className="w-4 h-4" />
-              Игр
+                Игр одобрено
              </div>
            </CardContent>
          </Card>
@@ -246,16 +463,34 @@ export function LobbyPage() {
            </CardContent>
          </Card>
        </div>
+      )}
+
+      {/* Pending games for moderation (organizers only) */}
+      {isOrganizer && pendingGames.length > 0 && (
+        <Card className="mb-8 border-yellow-900/50">
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2 text-yellow-400">
+              <Clock className="w-5 h-5" />
+              На модерации ({pendingGames.length})
+            </CardTitle>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-3">
+              {pendingGames.map((game) => renderGameCard(game, true))}
+            </div>
+          </CardContent>
+        </Card>
+      )}

      {/* Generate challenges button */}
-      {games.length > 0 && !previewChallenges && (
+      {isOrganizer && approvedGames.length > 0 && !previewChallenges && (
        <Card className="mb-8">
          <CardContent>
            <div className="flex items-center justify-between">
              <div>
                <h3 className="font-medium text-white">Генерация заданий</h3>
                <p className="text-sm text-gray-400">
-                  Используйте ИИ для генерации заданий для всех игр без заданий
+                  Используйте ИИ для генерации заданий для одобренных игр без заданий
                </p>
              </div>
              <Button onClick={handleGenerateChallenges} isLoading={isGenerating} variant="secondary">
@@ -425,10 +660,13 @@ export function LobbyPage() {
      <Card>
        <CardHeader className="flex flex-row items-center justify-between">
          <CardTitle>Игры</CardTitle>
+          {/* Показываем кнопку если: all_participants ИЛИ (organizer_only И isOrganizer) */}
+          {(marathon.game_proposal_mode === 'all_participants' || isOrganizer) && (
            <Button size="sm" onClick={() => setShowAddGame(!showAddGame)}>
              <Plus className="w-4 h-4 mr-1" />
-            Добавить игру
+              {isOrganizer ? 'Добавить игру' : 'Предложить игру'}
            </Button>
+          )}
        </CardHeader>
        <CardContent>
          {/* Add game form */}
@@ -451,116 +689,38 @@ export function LobbyPage() {
              />
              <div className="flex gap-2">
                <Button onClick={handleAddGame} isLoading={isAddingGame} disabled={!gameTitle || !gameUrl}>
-                  Добавить
+                  {isOrganizer ? 'Добавить' : 'Предложить'}
                </Button>
                <Button variant="ghost" onClick={() => setShowAddGame(false)}>
                  Отмена
                </Button>
              </div>
+              {!isOrganizer && (
+                <p className="text-xs text-gray-500">
+                  Ваша игра будет отправлена на модерацию организаторам
+                </p>
+              )}
            </div>
          )}

          {/* Games */}
-          {games.length === 0 ? (
+          {(() => {
+            // Организаторы: показываем только одобренные (pending в секции модерации)
+            // Участники: показываем одобренные + свои pending
+            const visibleGames = isOrganizer
+              ? games.filter(g => g.status !== 'pending')
+              : games.filter(g => g.status === 'approved' || (g.status === 'pending' && g.proposed_by?.id === user?.id))
+
+            return visibleGames.length === 0 ? (
              <p className="text-center text-gray-400 py-8">
-              Пока нет игр. Добавьте игры, чтобы начать!
+                {isOrganizer ? 'Пока нет игр. Добавьте игры, чтобы начать!' : 'Пока нет одобренных игр. Предложите свою!'}
              </p>
            ) : (
              <div className="space-y-3">
-              {games.map((game) => (
-                <div key={game.id} className="bg-gray-900 rounded-lg overflow-hidden">
-                  {/* Game header */}
-                  <div
-                    className="flex items-center justify-between p-4 cursor-pointer hover:bg-gray-800/50"
-                    onClick={() => game.challenges_count > 0 && handleToggleGameChallenges(game.id)}
-                  >
-                    <div className="flex items-center gap-3">
-                      {game.challenges_count > 0 && (
-                        <span className="text-gray-400">
-                          {expandedGameId === game.id ? (
-                            <ChevronUp className="w-4 h-4" />
-                          ) : (
-                            <ChevronDown className="w-4 h-4" />
-                          )}
-                        </span>
-                      )}
-                      <div>
-                        <h4 className="font-medium text-white">{game.title}</h4>
-                        <div className="text-sm text-gray-400">
-                          {game.genre && <span className="mr-3">{game.genre}</span>}
-                          <span>{game.challenges_count} заданий</span>
+                {visibleGames.map((game) => renderGameCard(game, false))}
              </div>
-                      </div>
-                    </div>
-                    <Button
-                      variant="ghost"
-                      size="sm"
-                      onClick={(e) => {
-                        e.stopPropagation()
-                        handleDeleteGame(game.id)
-                      }}
-                      className="text-red-400 hover:text-red-300"
-                    >
-                      <Trash2 className="w-4 h-4" />
-                    </Button>
-                  </div>
-
-                  {/* Expanded challenges list */}
-                  {expandedGameId === game.id && (
-                    <div className="border-t border-gray-800 p-4 space-y-2">
-                      {loadingChallenges === game.id ? (
-                        <div className="flex justify-center py-4">
-                          <Loader2 className="w-5 h-5 animate-spin text-gray-400" />
-                        </div>
-                      ) : gameChallenges[game.id]?.length > 0 ? (
-                        gameChallenges[game.id].map((challenge) => (
-                          <div
-                            key={challenge.id}
-                            className="flex items-start justify-between gap-3 p-3 bg-gray-800 rounded-lg"
-                          >
-                            <div className="flex-1 min-w-0">
-                              <div className="flex items-center gap-2 mb-1">
-                                <span className={`text-xs px-2 py-0.5 rounded ${
-                                  challenge.difficulty === 'easy' ? 'bg-green-900/50 text-green-400' :
-                                  challenge.difficulty === 'medium' ? 'bg-yellow-900/50 text-yellow-400' :
-                                  'bg-red-900/50 text-red-400'
-                                }`}>
-                                  {challenge.difficulty === 'easy' ? 'Легко' :
-                                   challenge.difficulty === 'medium' ? 'Средне' : 'Сложно'}
-                                </span>
-                                <span className="text-xs text-primary-400 font-medium">
-                                  +{challenge.points}
-                                </span>
-                                {challenge.is_generated && (
-                                  <span className="text-xs text-gray-500">
-                                    <Sparkles className="w-3 h-3 inline" /> ИИ
-                                  </span>
-                                )}
-                              </div>
-                              <h5 className="text-sm font-medium text-white">{challenge.title}</h5>
-                              <p className="text-xs text-gray-400 mt-1">{challenge.description}</p>
-                            </div>
-                            <Button
-                              variant="ghost"
-                              size="sm"
-                              onClick={() => handleDeleteChallenge(challenge.id, game.id)}
-                              className="text-red-400 hover:text-red-300 shrink-0"
-                            >
-                              <Trash2 className="w-3 h-3" />
-                            </Button>
-                          </div>
-                        ))
-                      ) : (
-                        <p className="text-center text-gray-500 py-2 text-sm">
-                          Нет заданий
-                        </p>
-                      )}
-                    </div>
-                  )}
-                </div>
-              ))}
-            </div>
-          )}
+            )
+          })()}
        </CardContent>
      </Card>
    </div>
--- a/frontend/src/pages/MarathonPage.tsx
+++ b/frontend/src/pages/MarathonPage.tsx
@@ -4,7 +4,7 @@ import { marathonsApi } from '@/api'
 import type { Marathon } from '@/types'
 import { Button, Card, CardContent } from '@/components/ui'
 import { useAuthStore } from '@/store/auth'
-import { Users, Calendar, Trophy, Play, Settings, Copy, Check, Loader2 } from 'lucide-react'
+import { Users, Calendar, Trophy, Play, Settings, Copy, Check, Loader2, Trash2, Globe, Lock, CalendarCheck, UserPlus, Gamepad2, ArrowLeft } from 'lucide-react'
 import { format } from 'date-fns'

 export function MarathonPage() {
@@ -14,6 +14,8 @@ export function MarathonPage() {
  const [marathon, setMarathon] = useState<Marathon | null>(null)
  const [isLoading, setIsLoading] = useState(true)
  const [copied, setCopied] = useState(false)
+  const [isDeleting, setIsDeleting] = useState(false)
+  const [isJoining, setIsJoining] = useState(false)

  useEffect(() => {
    loadMarathon()
@@ -40,6 +42,36 @@ export function MarathonPage() {
    }
  }

+  const handleDelete = async () => {
+    if (!marathon || !confirm('Вы уверены, что хотите удалить этот марафон? Это действие нельзя отменить.')) return
+
+    setIsDeleting(true)
+    try {
+      await marathonsApi.delete(marathon.id)
+      navigate('/marathons')
+    } catch (error) {
+      console.error('Failed to delete marathon:', error)
+      alert('Не удалось удалить марафон')
+    } finally {
+      setIsDeleting(false)
+    }
+  }
+
+  const handleJoinPublic = async () => {
+    if (!marathon) return
+
+    setIsJoining(true)
+    try {
+      const updated = await marathonsApi.joinPublic(marathon.id)
+      setMarathon(updated)
+    } catch (err: unknown) {
+      const error = err as { response?: { data?: { detail?: string } } }
+      alert(error.response?.data?.detail || 'Не удалось присоединиться')
+    } finally {
+      setIsJoining(false)
+    }
+  }
+
  if (isLoading || !marathon) {
    return (
      <div className="flex justify-center py-12">
@@ -48,21 +80,51 @@ export function MarathonPage() {
    )
  }

-  const isOrganizer = user?.id === marathon.organizer.id
+  const isOrganizer = marathon.my_participation?.role === 'organizer' || user?.role === 'admin'
  const isParticipant = !!marathon.my_participation
+  const isCreator = marathon.creator.id === user?.id
+  const canDelete = isCreator || user?.role === 'admin'

  return (
    <div className="max-w-4xl mx-auto">
+      {/* Back button */}
+      <Link to="/marathons" className="inline-flex items-center gap-2 text-gray-400 hover:text-white mb-4 transition-colors">
+        <ArrowLeft className="w-4 h-4" />
+        К списку марафонов
+      </Link>
+
      {/* Header */}
      <div className="flex justify-between items-start mb-8">
        <div>
-          <h1 className="text-3xl font-bold text-white mb-2">{marathon.title}</h1>
+          <div className="flex items-center gap-3 mb-2">
+            <h1 className="text-3xl font-bold text-white">{marathon.title}</h1>
+            <span className={`flex items-center gap-1 text-xs px-2 py-1 rounded ${
+              marathon.is_public
+                ? 'bg-green-900/50 text-green-400'
+                : 'bg-gray-700 text-gray-300'
+            }`}>
+              {marathon.is_public ? (
+                <><Globe className="w-3 h-3" /> Открытый</>
+              ) : (
+                <><Lock className="w-3 h-3" /> Закрытый</>
+              )}
+            </span>
+          </div>
          {marathon.description && (
            <p className="text-gray-400">{marathon.description}</p>
          )}
        </div>

        <div className="flex gap-2">
+          {/* Кнопка присоединиться для открытых марафонов */}
+          {marathon.is_public && !isParticipant && marathon.status !== 'finished' && (
+            <Button onClick={handleJoinPublic} isLoading={isJoining}>
+              <UserPlus className="w-4 h-4 mr-2" />
+              Присоединиться
+            </Button>
+          )}
+
+          {/* Настройка для организаторов */}
          {marathon.status === 'preparing' && isOrganizer && (
            <Link to={`/marathons/${id}/lobby`}>
              <Button variant="secondary">
@@ -72,6 +134,16 @@ export function MarathonPage() {
            </Link>
          )}

+          {/* Предложить игру для участников (не организаторов) если разрешено */}
+          {marathon.status === 'preparing' && isParticipant && !isOrganizer && marathon.game_proposal_mode === 'all_participants' && (
+            <Link to={`/marathons/${id}/lobby`}>
+              <Button variant="secondary">
+                <Gamepad2 className="w-4 h-4 mr-2" />
+                Предложить игру
+              </Button>
+            </Link>
+          )}
+
          {marathon.status === 'active' && isParticipant && (
            <Link to={`/marathons/${id}/play`}>
              <Button>
@@ -87,11 +159,22 @@ export function MarathonPage() {
              Рейтинг
            </Button>
          </Link>
+
+          {canDelete && (
+            <Button
+              variant="ghost"
+              onClick={handleDelete}
+              isLoading={isDeleting}
+              className="text-red-400 hover:text-red-300 hover:bg-red-900/20"
+            >
+              <Trash2 className="w-4 h-4" />
+            </Button>
+          )}
        </div>
      </div>

      {/* Stats */}
-      <div className="grid md:grid-cols-4 gap-4 mb-8">
+      <div className="grid md:grid-cols-5 gap-4 mb-8">
        <Card>
          <CardContent className="text-center py-4">
            <div className="text-2xl font-bold text-white">{marathon.participants_count}</div>
@@ -116,7 +199,19 @@ export function MarathonPage() {
            </div>
            <div className="text-sm text-gray-400 flex items-center justify-center gap-1">
              <Calendar className="w-4 h-4" />
-              Дата начала
+              Начало
+            </div>
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardContent className="text-center py-4">
+            <div className="text-2xl font-bold text-white">
+              {marathon.end_date ? format(new Date(marathon.end_date), 'd MMM') : '-'}
+            </div>
+            <div className="text-sm text-gray-400 flex items-center justify-center gap-1">
+              <CalendarCheck className="w-4 h-4" />
+              Конец
            </div>
          </CardContent>
        </Card>
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -1,9 +1,12 @@
 // User types
+export type UserRole = 'user' | 'admin'
+
 export interface User {
  id: number
  login: string
  nickname: string
  avatar_url: string | null
+  role: UserRole
  created_at: string
 }

@@ -15,22 +18,31 @@ export interface TokenResponse {

 // Marathon types
 export type MarathonStatus = 'preparing' | 'active' | 'finished'
+export type ParticipantRole = 'participant' | 'organizer'
+export type GameProposalMode = 'all_participants' | 'organizer_only'

 export interface ParticipantInfo {
  id: number
+  role: ParticipantRole
  total_points: number
  current_streak: number
  drop_count: number
  joined_at: string
 }

+export interface ParticipantWithUser extends ParticipantInfo {
+  user: User
+}
+
 export interface Marathon {
  id: number
  title: string
  description: string | null
-  organizer: User
+  creator: User
  status: MarathonStatus
  invite_code: string
+  is_public: boolean
+  game_proposal_mode: GameProposalMode
  start_date: string | null
  end_date: string | null
  participants_count: number
@@ -43,11 +55,21 @@ export interface MarathonListItem {
  id: number
  title: string
  status: MarathonStatus
+  is_public: boolean
  participants_count: number
  start_date: string | null
  end_date: string | null
 }

+export interface MarathonCreate {
+  title: string
+  description?: string
+  start_date: string
+  duration_days: number
+  is_public: boolean
+  game_proposal_mode: GameProposalMode
+}
+
 export interface LeaderboardEntry {
  rank: number
  user: User
@@ -58,13 +80,17 @@ export interface LeaderboardEntry {
 }

 // Game types
+export type GameStatus = 'pending' | 'approved' | 'rejected'
+
 export interface Game {
  id: number
  title: string
  cover_url: string | null
  download_url: string
  genre: string | null
-  added_by: User | null
+  status: GameStatus
+  proposed_by: User | null
+  approved_by: User | null
  challenges_count: number
  created_at: string
 }
@@ -158,7 +184,16 @@ export interface DropResult {
 }

 // Activity types
-export type ActivityType = 'join' | 'spin' | 'complete' | 'drop' | 'start_marathon' | 'finish_marathon'
+export type ActivityType =
+  | 'join'
+  | 'spin'
+  | 'complete'
+  | 'drop'
+  | 'start_marathon'
+  | 'finish_marathon'
+  | 'add_game'
+  | 'approve_game'
+  | 'reject_game'

 export interface Activity {
  id: number
@@ -173,3 +208,35 @@ export interface FeedResponse {
  total: number
  has_more: boolean
 }
+
+// Admin types
+export interface AdminUser {
+  id: number
+  login: string
+  nickname: string
+  role: UserRole
+  avatar_url: string | null
+  telegram_id: number | null
+  telegram_username: string | null
+  marathons_count: number
+  created_at: string
+}
+
+export interface AdminMarathon {
+  id: number
+  title: string
+  status: MarathonStatus
+  creator: User
+  participants_count: number
+  games_count: number
+  start_date: string | null
+  end_date: string | null
+  created_at: string
+}
+
+export interface PlatformStats {
+  users_count: number
+  marathons_count: number
+  games_count: number
+  total_participations: number
+}