# Story 2.3: Keep Playing Mode

Status: done

## Story

As a player,
I want to continue playing after reaching 2048,
so that I can push for higher tiles and a bigger score.

## Acceptance Criteria

1. After clicking "Keep going", the keepPlaying flag is set to true and subsequent 2048+ merges do not trigger the win overlay again
2. After closing and reopening the app in keep-playing mode, the game restores with keepPlaying: true and no win overlay
3. In keep-playing mode with no valid moves, the game over overlay appears normally

## Tasks / Subtasks

- [x] Task 1: Verify keepPlaying flag behavior (AC: #1)
  - [x] `handleKeepGoing()` sets `keepPlaying: true` in gameState (implemented in Story 1.6)
  - [x] `overlayType` checks `!gameState.keepPlaying` — win overlay only shows when keepPlaying is false (Story 1.6)
  - [x] `game-logic.js` move() win check: `!won && !state.keepPlaying` prevents re-trigger (Story 1.2)

- [x] Task 2: Verify persistence of keepPlaying (AC: #2)
  - [x] `saveGameState` includes `keepPlaying` in serialized state (Story 2.2)
  - [x] `loadGameState` restores `keepPlaying` from localStorage (Story 2.2)
  - [x] On restore with `keepPlaying: true` and `won: true`, overlayType evaluates to null — no win overlay

- [x] Task 3: Verify game over in keep-playing mode (AC: #3)
  - [x] `overlayType` checks `isGameOver(gameState)` regardless of keepPlaying — gameover overlay shows normally

- [x] Task 4: Run full test suite
  - [x] All 49 tests pass — no code changes needed for this story

## Dev Notes

### Architecture Compliance

All Story 2.3 acceptance criteria were already satisfied by prior stories:
- **Story 1.2:** Game logic win detection respects keepPlaying flag
- **Story 1.6:** handleKeepGoing, overlayType derived, GameMessage overlay
- **Story 2.2:** localStorage persistence of full game state including keepPlaying

No code changes required — this story is verification-only.

### References

- [Source: _bmad-output/planning-artifacts/epics.md#Story 2.3]

## Dev Agent Record

### Agent Model Used

Claude Opus 4.6 (1M context)

### Debug Log References

### Completion Notes List

- All 3 ACs verified against existing implementation — no code changes needed
- keepPlaying flag flow: handleKeepGoing → saveGameState → loadGameState → overlayType check
- Win re-trigger prevented by game-logic.js condition: `!won && !state.keepPlaying`
- 49 tests passing, no regressions

### File List

- (no files changed — verification-only story)