ai-coding-workflow-labs/gsd-framework/.planning/REQUIREMENTS.md

Requirements: Pikachu Match

Defined: 2026-03-10 Core Value: The satisfying "aha!" moment when you spot a valid connection and clear a pair — the core matching loop must feel smooth and rewarding.

v1 Requirements

Requirements for initial release. Each maps to roadmap phases.

Core Mechanics

• CORE-01: Game displays a grid of Pokemon tiles arranged in rows and columns
• CORE-02: Player can click/tap to select a tile (highlighted when selected)
• CORE-03: Player can click/tap a second tile to attempt a match
• CORE-04: Two matching tiles connect if a valid path exists with 3 or fewer straight lines
• CORE-05: Connected matching tiles disappear from the board
• CORE-06: Player receives points when tiles are matched and cleared
• CORE-07: Cleared tiles become passable space for future connections
• CORE-08: Game detects when no valid moves remain on the board
• CORE-09: Game detects win condition when all tiles are cleared

Board & Scoring

• BOARD-01: Player can shuffle remaining tiles when no moves available
• BOARD-02: Score is displayed and updates in real-time

Visual & UX

• UX-01: Matched tiles animate before disappearing
• UX-02: Game responds to touch input on mobile devices
• UX-03: Grid layout is responsive (works on phone and desktop)

v2 Requirements

Deferred to future release. Tracked but not in current roadmap.

Enhanced Gameplay

• ENHC-01: Timer with countdown pressure
• ENHC-02: Lose condition when time runs out
• ENHC-03: Hint system (highlights a valid match)
• ENHC-04: Path preview on hover (shows connection line)
• ENHC-05: Sound effects for matches and game events

Progression

• PROG-01: Multiple levels with increasing difficulty
• PROG-02: Level progression with different grid sizes
• PROG-03: Local high score persistence

Out of Scope

Explicitly excluded. Documented to prevent scope creep.

Feature	Reason
Multiplayer	v1 is single player only
Backend/Accounts	Keep v1 simple, no server needed
Multiple levels	One level proves the fun first
Sound effects	Can add later if core is fun
Timer/Lose condition	v1 focuses on relaxing puzzle solving
Hint system	Players should discover matches themselves in v1

Traceability

Which phases cover which requirements. Updated during roadmap creation.

Requirement	Phase	Status
CORE-01	Phase 1	Complete
CORE-02	Phase 2	Pending
CORE-03	Phase 2	Pending
CORE-04	Phase 3	Pending
CORE-05	Phase 3	Pending
CORE-06	Phase 3	Pending
CORE-07	Phase 3	Pending
CORE-08	Phase 4	Pending
CORE-09	Phase 4	Pending
BOARD-01	Phase 5	Pending
BOARD-02	Phase 3	Pending
UX-01	Phase 6	Pending
UX-02	Phase 6	Pending
UX-03	Phase 6	Pending

Coverage:

• v1 requirements: 14 total
• Mapped to phases: 14
• Unmapped: 0 ✓

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Requirements defined: 2026-03-10 Last updated: 2026-03-10 after 01-01-PLAN completion (CORE-01)