BMAD-METHOD/expansion-packs/bmad-wechat-mini-game-dev/templates/game-design-doc-tmpl.yaml

698 lines
34 KiB
YAML

template:
id: game-design-doc-template-v3
name: Game Design Document (GDD)
version: 4.0
output:
format: markdown
filename: docs/game-design-document.md
title: "{{game_title}} Game Design Document (GDD)"
workflow:
mode: interactive
elicitation: advanced-elicitation
sections:
- id: goals-context
title: Goals and Background Context
instruction: |
Ask if Project Brief document is available. If NO Project Brief exists, STRONGLY recommend creating one first using project-brief-tmpl (it provides essential foundation: problem statement, target users, success metrics, MVP scope, constraints). If user insists on GDD without brief, gather this information during Goals section. If Project Brief exists, review and use it to populate Goals (bullet list of desired game development outcomes) and Background Context (1-2 paragraphs on what game concept this will deliver and why) so we can determine what is and is not in scope for the GDD. Include Change Log table for version tracking.
sections:
- id: goals
title: Goals
type: bullet-list
instruction: Bullet list of 1 line desired outcomes the GDD will deliver if successful - game development and player experience goals
examples:
- Create an engaging 2D platformer that teaches players basic programming concepts
- Deliver a polished mobile game that runs smoothly on low-end Android devices
- Build a foundation for future expansion packs and content updates
- id: background
title: Background Context
type: paragraphs
instruction: 1-2 short paragraphs summarizing the game concept background, target audience needs, market opportunity, and what problem this game solves
- id: changelog
title: Change Log
type: table
columns: [Date, Version, Description, Author]
instruction: Track document versions and changes
- id: executive-summary
title: Executive Summary
instruction: Create a compelling overview that captures the essence of the game. Present this section first and get user feedback before proceeding.
elicit: true
sections:
- id: core-concept
title: Core Concept
instruction: 2-3 sentences that clearly describe what the game is and why players will love it
examples:
- A fast-paced 2D platformer where players manipulate gravity to solve puzzles and defeat enemies in a hand-drawn world.
- An educational puzzle game that teaches coding concepts through visual programming blocks in a fantasy adventure setting.
- id: target-audience
title: Target Audience
instruction: Define the primary and secondary audience with demographics and gaming preferences
template: |
**Primary:** {{age_range}}, {{player_type}}, {{platform_preference}}
**Secondary:** {{secondary_audience}}
examples:
- "Primary: Ages 8-16, casual mobile gamers, prefer short play sessions"
- "Secondary: Adult puzzle enthusiasts, educators looking for teaching tools"
- id: platform-technical
title: Platform & Technical Requirements
instruction: Based on the technical preferences or user input, define the target platforms and WeChat Mini Game-specific requirements
template: |
**Primary Platform:** {{platform}}
**Engine:** WeChat Mini Game
**Language Strategy:** JavaScript
**Performance Target:** 60+ FPS minimum on {{minimum_device}}
**Screen Support:** {{resolution_range}}
**Export Templates:** {{export_targets}}
**TDD Approach:** Jest
examples:
- "Primary Platform: Mobile (iOS/Android), Performance: 60+ FPS on iPhone 8/Galaxy S8"
- id: unique-selling-points
title: Unique Selling Points
instruction: List 3-5 key features that differentiate this game from competitors
type: numbered-list
examples:
- Innovative gravity manipulation mechanic that affects both player and environment
- Seamless integration of educational content without compromising fun gameplay
- Adaptive difficulty system that learns from player behavior
- id: core-gameplay
title: Core Gameplay
instruction: This section defines the fundamental game mechanics. After presenting each subsection, apply advanced elicitation to ensure completeness and gather additional details.
elicit: true
sections:
- id: game-pillars
title: Game Pillars
instruction: Define 3-5 core pillars that guide all design decisions. These should be specific and actionable for WeChat Mini Game development.
type: numbered-list
template: |
**{{pillar_name}}** - {{description}}
examples:
- Performance First - Maintain 60+ FPS across all target platforms
- Intuitive Controls - All interactions learnable within 30 seconds
- Immediate Feedback - Every player action provides event response within 50ms
- Progressive Challenge - Difficulty increases through mechanic complexity, not unfair timing
- id: core-gameplay-loop
title: Core Gameplay Loop
instruction: Define the 30-60 second loop that players will repeat. Be specific about timing and player actions for WeChat Mini Game implementation.
template: |
**Primary Loop ({{duration}} seconds):**
1. {{action_1}} ({{time_1}}s) - {{object}}
2. {{action_2}} ({{time_2}}s) - {{object}}
3. {{action_3}} ({{time_3}}s) - {{object}}
4. {{reward_feedback}} ({{time_4}}s) - {{object}}
**Performance Target:** Loop maintains 60+ FPS
examples:
- Observe environment (2s) - Camera, Identify puzzle elements (3s) - Area detection
- id: win-loss-conditions
title: Win/Loss Conditions
instruction: Clearly define success and failure states with WeChat Mini Game-specific implementation notes
template: |
**Victory Conditions:**
- {{win_condition_1}} - Event: {{event_name}}
- {{win_condition_2}} - Event: {{event_name}}
**Failure States:**
- {{loss_condition_1}} - Trigger: {{trigger}}
- {{loss_condition_2}} - Trigger: {{trigger}}
examples:
- "Victory: Player reaches exit portal - Event: area_entered from Area"
- "Failure: Health reaches zero - Trigger: health_depleted event"
- id: game-mechanics
title: Game Mechanics
instruction: Detail each major mechanic that will need WeChat Mini Game implementation. Each mechanic should be specific enough for developers to create objects, scripts, and scenes with TDD approach.
elicit: true
sections:
- id: primary-mechanics
title: Primary Mechanics
repeatable: true
sections:
- id: mechanic
title: "{{mechanic_name}}"
template: |
**Description:** {{detailed_description}}
**Player Input:** {{input_method}} - Input Action: {{input_action}}
**System Response:** {{game_response}}
**WeChat Mini Game Implementation Notes:**
- **Objects Needed:** {{object_list}}
- **Physics Requirements:** {{physics_setup}}
- **Animation:** {{animation_states}}
- **Performance:** Must maintain 60+ FPS
- **Object Pooling:** {{pooling_requirements}}
**Dependencies:** {{other_mechanics_needed}}
**Script Architecture:**
- {{script_name}}.js - {{responsibility}}
- {{global_manager}}.js - {{singleton_role}}
**TDD Requirements:**
- Jest tests for components
examples:
- "Objects Needed: RigidBody, CollisionShape, PlayerController object"
- "Physics Requirements: Physics material for friction, gravity scale 3"
- id: controls
title: Controls
instruction: Define all input methods for different platforms using the WeChat Mini Game API
type: table
template: |
| Action | Desktop | Mobile | Gamepad | Input Action |
| ------ | ------- | ------ | ------- | --------------- |
| {{action}} | {{key}} | {{gesture}} | {{button}} | {{action_name}} |
examples:
- Move Left, A/Left Arrow, Touch Left, Left Stick, move_left
- id: progression-balance
title: Progression & Balance
instruction: Define how players advance and how difficulty scales. This section should provide clear parameters for WeChat Mini Game implementation with JSON and language strategy.
elicit: true
sections:
- id: player-progression
title: Player Progression
template: |
**Progression Type:** {{linear|branching|metroidvania}}
**Key Milestones:**
1. **{{milestone_1}}** - {{unlock_description}} - WeChat Mini Game: {{resource_update}}
2. **{{milestone_2}}** - {{unlock_description}} - WeChat Mini Game: {{resource_update}}
3. **{{milestone_3}}** - {{unlock_description}} - WeChat Mini Game: {{resource_update}}
**Save Data Structure:**
```javascript
{
"currentLevel": 0,
"unlockedAbilities": [],
"totalPlayTime": 0
}
```
- id: difficulty-curve
title: Difficulty Curve
instruction: Provide specific parameters for balancing that can be implemented as JSON with performance focus
template: |
**Tutorial Phase:** {{duration}} - {{difficulty_description}}
- WeChat Mini Game Config: {{json_values}}
**Early Game:** {{duration}} - {{difficulty_description}}
- WeChat Mini Game Config: {{json_values}} - Must maintain 60+ FPS
**Mid Game:** {{duration}} - {{difficulty_description}}
- WeChat Mini Game Config: {{json_values}} - Object pooling required
**Late Game:** {{duration}} - {{difficulty_description}}
- WeChat Mini Game Config: {{json_values}}
examples:
- "enemy speed: 2.0, jump height: 4.5, obstacle density: 0.3"
- id: economy-resources
title: Economy & Resources
condition: has_economy
instruction: Define any in-game currencies, resources, or collectibles with WeChat Mini Game implementation details
type: table
template: |
| Resource | Earn Rate | Spend Rate | Purpose | Cap | JSON Resource |
| -------- | --------- | ---------- | ------- | --- | --------------- |
| {{resource}} | {{rate}} | {{rate}} | {{use}} | {{max}} | {{resource_name}} |
examples:
- Coins, 1-3 per enemy, 10-50 per upgrade, Buy abilities, 9999, CurrencyData
- id: level-design-framework
title: Level Design Framework
instruction: Provide guidelines for level creation that developers can use to create WeChat Mini Game scenes and objects. Focus on modular design, scene inheritance, and performance optimization.
elicit: true
sections:
- id: level-types
title: Level Types
repeatable: true
sections:
- id: level-type
title: "{{level_type_name}}"
template: |
**Purpose:** {{gameplay_purpose}}
**Target Duration:** {{target_time}}
**Key Elements:** {{required_mechanics}}
**Difficulty Rating:** {{relative_difficulty}}
**WeChat Mini Game Scene Structure:**
- **Environment:** {{tilemap_setup}}
- **Gameplay Objects:** {{object_list}}
- **Lighting:** {{lighting_setup}}
- **Audio:** {{audio_sources}}
**Level Flow Template:**
- **Introduction:** {{intro_description}} - Area: {{area_bounds}}
- **Challenge:** {{main_challenge}} - Mechanics: {{active_components}}
- **Resolution:** {{completion_requirement}} - Trigger: {{completion_trigger}}
**Reusable Scenes:**
- {{scene_name}}.js - {{scene_purpose}}
examples:
- "Environment: TileMap with Platform tileset, Lighting: DirectionalLight2D + PointLight2D"
- id: level-progression
title: Level Progression
template: |
**World Structure:** {{linear|hub|open}}
**Total Levels:** {{number}}
**Unlock Pattern:** {{progression_method}}
**Scene Management:** {{scene_loading}}
**WeChat Mini Game Scene Organization:**
- Scene Naming: {{naming_convention}}
- Resource Preloading: {{preload_groups}}
- Loading Screens: {{loading_implementation}}
examples:
- "Scene Naming: world_{x}_level_{y}_name.js, Preload Groups: levels_world1.json, world_environments.json"
- id: technical-specifications
title: Technical Specifications
instruction: Define WeChat Mini Game-specific technical requirements that will guide architecture and implementation decisions. Reference WeChat Mini Game documentation and best practices.
elicit: true
choices:
renderer: [Canvas 2D, WebGL]
physics: [2D Only]
sections:
- id: wechat-mini-game-configuration
title: WeChat Mini Game Project Configuration
template: |
**Engine:** WeChat Mini Game
**Renderer:** {{Canvas 2D|WebGL}}
**Physics:** {{2D Only}}
**Export Templates:** {{platforms}}
**Project Settings:**
- Rendering Method: {{rendering_method}}
- Physics Settings: {{physics_config}}
- Object Pooling: Required for spawned entities
examples:
- "Color Space: Linear, Quality: Mobile/Desktop presets, Gravity: -20"
- id: performance-requirements
title: Performance Requirements
template: |
**Frame Rate:** {{fps_target}} FPS (minimum {{min_fps}} on low-end devices)
**Memory Usage:** <{{memory_limit}}MB heap, <{{texture_memory}}MB textures
**Load Times:** <{{load_time}}s initial, <{{level_load}}s between levels
**Battery Usage:** Optimized for mobile devices - {{battery_target}} hours gameplay
**WeChat Mini Game Profiler Targets:**
- Frame Time: <16.67ms (60+ FPS mandatory)
- CPU Time: <{{cpu_time}}ms
- GPU Time: <{{gpu_time}}ms
- Physics Frame: <{{physics_time}}ms
- Draw Calls: <{{draw_calls}} per frame
- Object Pools: Active for all spawned entities
examples:
- "60 FPS (minimum 30), CPU: <16.67ms, GPU: <16.67ms, GC: <4KB, Draws: <50"
- id: platform-specific
title: Platform Specific Requirements
template: |
**Desktop:**
- Resolution: {{min_resolution}} - {{max_resolution}}
- Input: Keyboard, Mouse, Gamepad ({{gamepad_support}})
- Build Target: {{desktop_targets}}
**Mobile:**
- Resolution: {{mobile_min}} - {{mobile_max}}
- Input: Touch, Accelerometer ({{sensor_support}})
- OS: iOS {{ios_min}}+, Android {{android_min}}+ (API {{api_level}})
- Device Requirements: {{device_specs}}
examples:
- "Resolution: 1280x720 - 4K, Gamepad: Xbox/PlayStation controllers"
- id: asset-requirements
title: Asset Requirements
instruction: Define asset specifications for WeChat Mini Game pipeline optimization with performance focus
template: |
**2D Art Assets:**
- Sprites: {{sprite_resolution}} at {{ppu}} PPU
- Texture Format: {{texture_compression}}
- Atlas Strategy: {{sprite_atlas_setup}}
- Animation: {{animation_type}} at {{framerate}} FPS
**Audio Assets:**
- Music: {{audio_format}} at {{sample_rate}} Hz
- SFX: {{sfx_format}} at {{sfx_sample_rate}} Hz
- Compression: {{audio_compression}}
- 3D Audio: {{spatial_audio}}
**UI Assets:**
- Canvas Resolution: {{ui_resolution}}
- UI Scale Mode: {{scale_mode}}
- Font: {{font_requirements}}
- Icon Sizes: {{icon_specifications}}
examples:
- "Sprites: 32x32 to 256x256 at 16 PPU, Format: RGBA32 for quality/RGBA16 for performance"
- id: technical-architecture-requirements
title: Technical Architecture Requirements
instruction: Define high-level WeChat Mini Game architecture patterns and systems that the game must support. Focus on scalability, TDD, and 60+ FPS performance.
elicit: true
choices:
architecture_pattern: [Object-Based, MVC, Component-Based, Event-Driven]
save_system: [LocalStorage, JSON, Binary, Cloud]
sections:
- id: code-architecture
title: Code Architecture Pattern
template: |
**Architecture Pattern:** {{MVC|MVVM|ECS|Component-Based|Custom}}
**Core Systems Required:**
- **Scene Management:** {{scene_manager_approach}}
- **State Management:** {{state_pattern_implementation}}
- **Event System:** {{event_system_choice}}
- **Object Pooling:** {{pooling_strategy}}
- **Save/Load System:** {{save_system_approach}}
**Folder Structure:**
```
wechat-mini-game/
├── js/
│ ├── {{folder_structure}}
├── scenes/
│ └── {{additional_folders}}
```
**Naming Conventions:**
- Scripts: {{script_naming}}
- Scenes: {{scene_naming}}
examples:
- "Architecture: Object-Based with JSON data containers"
- "Scripts: PascalCase (PlayerController.js), snake_case (player_controller.js), Scenes: player.js, level_01_forest.js"
- id: wechat-mini-game-systems-integration
title: WeChat Mini Game Systems Integration
template: |
**Required WeChat Mini Game Systems:**
- **Input System:** {{input_implementation}}
- **Animation System:** {{animation_approach}}
- **Physics Integration:** {{physics_usage}}
- **Rendering Features:** {{rendering_requirements}}
- **Asset Streaming:** {{asset_loading_strategy}}
**Third-Party Integrations:**
- {{integration_name}}: {{integration_purpose}}
**Performance Systems:**
- **Profiling Integration:** {{profiling_setup}}
- **Memory Management:** {{memory_strategy}}
- **Build Pipeline:** {{build_automation}}
examples:
- "Input System: Touch events for movement and UI"
- id: data-management
title: Data Management
template: |
**Save Data Architecture:**
- **Format:** {{LocalStorage|JSON|Binary|Cloud}}
- **Structure:** {{save_data_organization}}
- **Encryption:** {{security_approach}}
- **Cloud Sync:** {{cloud_integration}}
**Configuration Data:**
- **JSON:** {{json_usage}}
- **Settings Management:** {{settings_system}}
- **Localization:** {{localization_approach}}
**Runtime Data:**
- **Caching Strategy:** {{cache_implementation}}
- **Memory Pools:** {{pooling_objects}}
- **Asset References:** {{asset_reference_system}}
examples:
- "Save Data: JSON format with AES encryption, stored in local storage"
- "JSON: Game settings, level configurations, character data"
- id: development-phases
title: Development Phases & Epic Planning
instruction: Break down the WeChat Mini Game development into phases that can be converted to agile epics. Each phase should deliver deployable functionality following TDD practices with 60+ FPS performance.
elicit: true
sections:
- id: phases-overview
title: Phases Overview
instruction: Present a high-level list of all phases for user approval. Each phase's design should deliver significant WeChat Mini Game functionality with TDD and performance validation.
type: numbered-list
examples:
- "Phase 1: Foundation & Core Systems: Project setup with TDD, object architecture, Input handling"
- "Phase 2: Core Game Mechanics: Player controller, physics systems, 60+ FPS validation"
- "Phase 3: Level Systems & Content Pipeline: Scene loading, inheritance patterns, object pooling implementation"
- "Phase 4: Polish & Platform Optimization: Performance profiling to 60+ FPS, export templates, platform deployment"
- id: phase-1-foundation
title: "Phase 1: Foundation & Core Systems ({{duration}})"
sections:
- id: foundation-design
title: "Design: Project Foundation"
type: bullet-list
template: |
- WeChat Mini Game project setup with object hierarchy and resource organization
- Core architecture implementation ({{architecture_pattern}}) with TDD setup
- Input handling configuration for cross-platform input
- Scene management with event system
- Jest test framework setup
- Profiler integration for 60+ FPS validation
- Export template configuration for target platforms
examples:
- "Input System: Configure touch events for movement and UI"
- id: core-systems-design
title: "Design: Essential Game Systems"
type: bullet-list
template: |
- Save/Load system using local storage with {{save_format}} format
- Audio system setup
- Event system for decoupled object communication
- Object pooling system for spawned entities (mandatory)
- UI framework with anchoring and themes
- Settings and configuration management with JSON
- id: phase-2-gameplay
title: "Phase 2: Core Gameplay Implementation ({{duration}})"
sections:
- id: gameplay-mechanics-design
title: "Design: Primary Game Mechanics"
type: bullet-list
template: |
- Player controller with {{movement_type}} using JavaScript
- {{primary_mechanic}} implementation with WeChat Mini Game physics
- {{secondary_mechanic}} system with 60+ FPS maintained
- Game state management (playing, paused, game over)
- Collision detection with the physics engine
- Animation integration
- id: level-systems-design
title: "Design: Level & Content Systems"
type: bullet-list
template: |
- Scene loading with transitions <3 seconds
- Level progression with JSON-based unlock system
- Scene inheritance and composition patterns
- {{level_generation}} level creation with TDD tests
- Collectibles with object pooling for performance
- Victory/defeat conditions with event emissions
- id: phase-3-polish
title: "Phase 3: Polish & Optimization ({{duration}})"
sections:
- id: performance-design
title: "Design: Performance & Platform Optimization"
type: bullet-list
template: |
- WeChat Mini Game Profiler analysis to ensure 60+ FPS
- Memory management and garbage collection optimization
- Asset optimization (import settings, compression)
- Platform-specific performance tuning for 60+ FPS
- Export size optimization with stripping
- Renderer settings for different device tiers
- id: user-experience-design
title: "Design: User Experience & Polish"
type: bullet-list
template: |
- UI with responsive anchoring
- Audio system with dynamic mixing
- Particle effects with object pooling
- Accessibility features
- Tutorial flow with test coverage
- Cross-platform testing for 60+ FPS on all targets
- id: epic-list
title: Epic List
instruction: |
Present a high-level list of all epics for user approval. Each epic should have a title and a short (1 sentence) goal statement. This allows the user to review the overall structure before diving into details.
CRITICAL: Epics MUST be logically sequential following agile best practices:
- Each epic should be focused on a single phase and it's design from the development-phases section and deliver a significant, end-to-end, fully deployable increment of testable functionality
- Epic 1 must establish foundational project infrastructure (app setup, Git, CI/CD, core services) unless we are adding new functionality to an existing app, while also delivering an initial piece of functionality, even as simple as a health-check route or display of a simple canary page - remember this when we produce the stories for the first epic!
- Each subsequent epic builds upon previous epics' functionality delivering major blocks of functionality that provide tangible value to users or business when deployed
- Not every project needs multiple epics, an epic needs to deliver value. For example, an API completed can deliver value even if a UI is not complete and planned for a separate epic.
- Err on the side of less epics, but let the user know your rationale and offer options for splitting them if it seems some are too large or focused on disparate things.
- Cross Cutting Concerns should flow through epics and stories and not be final stories. For example, adding a logging framework as a last story of an epic, or at the end of a project as a final epic or story would be terrible as we would not have logging from the beginning.
elicit: true
examples:
- "Epic 1: Foundation & Core Systems: TDD setup, object architecture, Input handling"
- "Epic 2: Core Game Mechanics: Player controller, physics, 60+ FPS validation"
- "Epic 3: Level Systems & Content Pipeline: Scene inheritance, resource preloading, object pooling"
- "Epic 4: Polish & Platform Optimization: Performance profiling to 60+ FPS, export templates, deployment"
- id: epic-details
title: Epic {{epic_number}} {{epic_title}}
repeatable: true
instruction: |
After the epic list is approved, present each epic with all its stories and acceptance criteria as a complete review unit.
For each epic provide expanded goal (2-3 sentences describing the objective and value all the stories will achieve).
CRITICAL STORY SEQUENCING REQUIREMENTS:
- Stories within each epic MUST be logically sequential
- Each story should be a "vertical slice" delivering complete functionality aside from early enabler stories for project foundation
- No story should depend on work from a later story or epic
- Identify and note any direct prerequisite stories
- Focus on "what" and "why" not "how" (leave technical implementation to Architect) yet be precise enough to support a logical sequential order of operations from story to story.
- Ensure each story delivers clear user or business value, try to avoid enablers and build them into stories that deliver value.
- Size stories for AI agent execution: Each story must be completable by a single AI agent in one focused session without context overflow
- Think "junior developer working for 2-4 hours" - stories must be small, focused, and self-contained
- If a story seems complex, break it down further as long as it can deliver a vertical slice
elicit: true
template: "{{epic_goal}}"
sections:
- id: story
title: Story {{epic_number}}.{{story_number}} {{story_title}}
repeatable: true
instruction: Provide a clear, concise description of what this story implements. Focus on the specific game feature or system being built. Reference the GDD section that defines this feature and reference the gamearchitecture section for additional implementation and integration specifics.
template: "{{clear_description_of_what_needs_to_be_implemented}}"
sections:
- id: acceptance-criteria
title: Acceptance Criteria
instruction: Define specific, testable conditions that must be met for the story to be considered complete. Each criterion should be verifiable and directly related to gameplay functionality.
sections:
- id: functional-requirements
title: Functional Requirements
type: checklist
items:
- "{{specific_functional_requirement}}"
- id: technical-requirements
title: Technical Requirements
type: checklist
items:
- Code follows JavaScript best practices
- Maintains 60+ FPS on all target devices
- No memory leaks, proper event cleanup, object pooling active
- "{{specific_technical_requirement}}"
- id: game-design-requirements
title: Game Design Requirements
type: checklist
items:
- "{{gameplay_requirement_from_gdd}}"
- "{{balance_requirement_if_applicable}}"
- "{{player_experience_requirement}}"
- id: success-metrics
title: Success Metrics & Quality Assurance
instruction: Define measurable goals for the WeChat Mini Game development project with specific targets that can be validated through the WeChat Mini Game profiler and performance monitoring.
elicit: true
sections:
- id: technical-metrics
title: Technical Performance Metrics
type: bullet-list
template: |
- **Frame Rate:** Consistent {{fps_target}} FPS with <5% drops below {{min_fps}}
- **Load Times:** Initial load <{{initial_load}}s, level transitions <{{level_load}}s
- **Memory Usage:** Heap memory <{{heap_limit}}MB, texture memory <{{texture_limit}}MB
- **Crash Rate:** <{{crash_threshold}}% across all supported platforms
- **Build Size:** Final build <{{size_limit}}MB for mobile, <{{desktop_limit}}MB for desktop
- **Battery Life:** Mobile gameplay sessions >{{battery_target}} hours on average device
examples:
- "Frame Rate: Consistent 60 FPS with <5% drops below 45 FPS on target hardware"
- "Crash Rate: <0.5% across iOS/Android, <0.1% on desktop platforms"
- id: gameplay-metrics
title: Gameplay & User Engagement Metrics
type: bullet-list
template: |
- **Tutorial Completion:** {{tutorial_rate}}% of players complete basic tutorial
- **Level Progression:** {{progression_rate}}% reach level {{target_level}} within first session
- **Session Duration:** Average session length {{session_target}} minutes
- **Player Retention:** Day 1: {{d1_retention}}%, Day 7: {{d7_retention}}%, Day 30: {{d30_retention}}%
- **Gameplay Completion:** {{completion_rate}}% complete main game content
- **Control Responsiveness:** Input lag <{{input_lag}}ms on all platforms
examples:
- "Tutorial Completion: 85% of players complete movement and basic mechanics tutorial"
- "Session Duration: Average 15-20 minutes per session for mobile, 30-45 minutes for desktop"
- id: platform-specific-metrics
title: Platform-Specific Quality Metrics
type: table
template: |
| Platform | Frame Rate | Load Time | Memory | Build Size | Battery |
| -------- | ---------- | --------- | ------ | ---------- | ------- |
| {{platform}} | {{fps}} | {{load}} | {{memory}} | {{size}} | {{battery}} |
examples:
- iOS, 60 FPS, <3s, <150MB, <80MB, 3+ hours
- Android, 60 FPS, <5s, <200MB, <100MB, 2.5+ hours
- id: next-steps-integration
title: Next Steps & BMad Integration
instruction: Define how this GDD integrates with BMad's agent workflow and what follow-up documents or processes are needed.
sections:
- id: architecture-handoff
title: WeChat Mini Game Architecture Requirements
instruction: Summary of key architectural decisions that need to be implemented in WeChat Mini Game project setup with TDD and performance focus
type: bullet-list
template: |
- WeChat Mini Game project with {{renderer}} renderer
- {{architecture_pattern}} object architecture with {{folder_structure}}
- Performance targets: 60+ FPS mandatory, {{key_performance_metrics}}
- Platform exports: {{deployment_targets}} with export templates
- id: story-creation-guidance
title: Story Creation Guidance for SM Agent
instruction: Provide guidance for the Story Manager (SM) agent on how to break down this GDD into implementable user stories
template: |
**Epic Prioritization:** {{epic_order_rationale}}
**Story Sizing Guidelines:**
- Foundation stories: {{foundation_story_scope}}
- Feature stories: {{feature_story_scope}}
- Polish stories: {{polish_story_scope}}
**WeChat Mini Game-Specific Story Considerations:**
- Each story should result in testable scenes with test coverage
- Include specific object hierarchies and event flows in acceptance criteria
- Enforce 60+ FPS performance validation in each story
- Account for export template configuration and deployment
examples:
- "Foundation stories: Individual WeChat Mini Game systems with TDD (Input, Audio, Scene Tree) - 1-2 days each"
- "Feature stories: Complete gameplay mechanics with 60+ FPS validation - 2-4 days each"
- id: recommended-agents
title: Recommended BMad Agent Sequence
type: numbered-list
template: |
1. **{{agent_name}}**: {{agent_responsibility}}
examples:
- "WeChat Mini Game Architect: Create detailed technical architecture with object patterns"
- "WeChat Mini Game Developer: Implement systems with TDD maintaining 60+ FPS"
- "QA Tester: Validate performance targets, event cleanup, and platform exports"
```