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WeChat Mini-Game Development BMad Knowledge Base

Overview

This game development expansion of BMad-Method specializes in creating 2D games for the WeChat Mini-Game platform. It extends the core BMad framework with game-specific agents, workflows, and best practices for professional WeChat mini-game development.

Game Development Focus

  • Target Engine: WeChat Mini-Game Runtime with JavaScript/TypeScript
  • Platform Strategy: WeChat-first with a focus on social features
  • Development Approach: Agile story-driven development
  • Performance Target: Smooth performance on target devices
  • Architecture: Component-based game systems

Core Game Development Philosophy

Player-First Development

You are developing games as a "Player Experience CEO" - thinking like a game director with unlimited creative resources and a singular vision for player enjoyment. Your AI agents are your specialized game development team:

  • Direct: Provide clear game design vision and player experience goals
  • Refine: Iterate on gameplay mechanics until they're compelling
  • Oversee: Maintain creative alignment across all development disciplines
  • Playfocus: Every decision serves the player experience

Game Development Principles

  1. PLAYER_EXPERIENCE_FIRST: Every mechanic must serve player engagement and fun
  2. ITERATIVE_DESIGN: Prototype, test, refine - games are discovered through iteration
  3. TECHNICAL_EXCELLENCE: Smooth performance and cross-platform compatibility are non-negotiable
  4. STORY_DRIVEN_DEV: Game features are implemented through detailed development stories
  5. BALANCE_THROUGH_DATA: Use metrics and playtesting to validate game balance
  6. DOCUMENT_EVERYTHING: Clear specifications enable proper game implementation
  7. START_SMALL_ITERATE_FAST: Core mechanics first, then expand and polish
  8. EMBRACE_CREATIVE_CHAOS: Games evolve - adapt design based on what's fun

Game Development Workflow

Phase 1: Game Concept and Design

  1. Game Designer: Start with brainstorming and concept development

    • Use *brainstorm to explore game concepts and mechanics
    • Create Game Brief using game-brief-tmpl
    • Develop core game pillars and player experience goals

  2. Game Designer: Create comprehensive Game Design Document

    • Use game-design-doc-tmpl to create detailed GDD
    • Define all game mechanics, progression, and balance
    • Specify technical requirements and platform targets

  3. Game Designer: Develop Level Design Framework

    • Define level types, difficulty progression, and content structure
    • Establish performance and technical constraints for levels

Phase 2: Technical Architecture

  1. Solution Architect (or Game Designer): Create Technical Architecture
    • Use game-architecture-tmpl to design technical implementation
    • Define WeChat Mini-Game systems, performance optimization, and code structure
    • Align technical architecture with game design requirements

Phase 3: Story-Driven Development

  1. Game Scrum Master: Break down design into development stories

    • Use create-game-story task to create detailed implementation stories
    • Each story should be immediately actionable by game developers
    • Apply game-story-dod-checklist to ensure story quality

  2. Game Developer: Implement game features story by story

    • Follow JavaScript/TypeScript best practices and WeChat Mini-Game guidelines
    • Maintain smooth performance target throughout development
    • Use test-driven development for game logic components

  3. Iterative Refinement: Continuous playtesting and improvement

    • Test core mechanics early and often
    • Validate game balance through metrics and player feedback
    • Iterate on design based on implementation discoveries

WeChat Mini-Game Development Guidelines

WeChat Mini-Game Standards

Project Structure:

mini-game-project/
├── images/              # Image assets
├── js/                  # JavaScript files
│   ├── libs/            # Third-party libraries
│   ├── main.js          # Main game logic
│   └── ...
├── game.json            # Main configuration file
├── project.config.json  # Project configuration file
└── ...

Performance Requirements:

  • Maintain smooth performance on target devices
  • Adhere to WeChat's package size limits (e.g., 4MB initial package)
  • Loading times under 3 seconds for levels
  • Smooth animation and responsive controls

Code Quality:

  • JavaScript/TypeScript best practices
  • Component-based architecture
  • Object pooling for frequently created/destroyed objects
  • Error handling and graceful degradation

Game Development Story Structure

Story Requirements:

  • Clear reference to Game Design Document section
  • Specific acceptance criteria for game functionality
  • Technical implementation details for WeChat Mini-Games
  • Performance requirements and optimization considerations
  • Testing requirements including gameplay validation

Story Categories:

  • Core Mechanics: Fundamental gameplay systems
  • Level Content: Individual levels and content implementation
  • UI/UX: User interface and player experience features
  • Performance: Optimization and technical improvements
  • Polish: Visual effects, audio, and game feel enhancements

Quality Assurance for Games

Testing Approach:

  • Unit tests for game logic
  • Integration tests for game systems
  • Performance benchmarking and profiling
  • Gameplay testing and balance validation
  • Cross-platform compatibility testing on iOS and Android

Performance Monitoring:

  • Frame rate consistency tracking
  • Memory usage monitoring
  • Asset loading performance
  • Input responsiveness validation
  • Battery usage optimization

Game Development Team Roles

Game Designer (Alex)

  • Primary Focus: Game mechanics, player experience, design documentation
  • Key Outputs: Game Brief, Game Design Document, Level Design Framework
  • Specialties: Brainstorming, game balance, player psychology, creative direction

Game Developer (Maya)

  • Primary Focus: WeChat Mini-Game implementation, technical excellence, performance
  • Key Outputs: Working game features, optimized code, technical architecture
  • Specialties: JavaScript/TypeScript, WeChat Mini-Game APIs, performance optimization

Game Scrum Master (Jordan)

  • Primary Focus: Story creation, development planning, agile process
  • Key Outputs: Detailed implementation stories, sprint planning, quality assurance
  • Specialties: Story breakdown, developer handoffs, process optimization

WeChat Mini-Game Platform Considerations

API Usage

  • Correctly use wx.login, wx.getUserInfo, etc.
  • Implement sharing and invitation features using wx.shareAppMessage.
  • Use Open Data Context for leaderboards and other social features.

Performance and Limitations

  • Be mindful of the package size limit. Use subpackages for larger games.
  • Optimize image and audio assets to reduce file size.
  • Understand the limitations of the rendering context (e.g., no WebGL for 2D canvas).

Success Metrics for WeChat Mini-Games

Technical Metrics

  • Frame rate consistency
  • Memory usage within budgets
  • Loading time targets met
  • Zero critical bugs in core gameplay systems

Player Experience Metrics

  • Tutorial completion rate
  • Level completion rates
  • Average session length
  • Player retention and engagement metrics
  • Sharing and invite rates

Development Process Metrics

  • Story completion within estimated timeframes
  • Code quality metrics (test coverage, linting compliance)
  • Documentation completeness and accuracy
  • Team velocity and delivery consistency

This knowledge base provides the foundation for effective WeChat Mini-Game development using the BMad-Method framework.