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BMAD-METHOD/expansion-packs/bmad-2d-unity-game-dev/workflows/game-dev-greenfield.yaml

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YAML

workflow:
id: unity-game-dev-greenfield
name: Game Development - Greenfield Project (Unity)
description: Specialized workflow for creating 2D games from concept to implementation using Unity and C#. Guides teams through game concept development, design documentation, technical architecture, and story-driven development for professional game development.
type: greenfield
project_types:
- indie-game
- mobile-game
- web-game
- educational-game
- prototype-game
- game-jam
full_game_sequence:
- agent: game-designer
creates: game-brief.md
optional_steps:
- brainstorming_session
- game_research_prompt
- player_research
notes: "Start with brainstorming game concepts, then create comprehensive game brief. SAVE OUTPUT: Copy final game-brief.md to your project's docs/design/ folder."
- agent: game-designer
creates: game-design-doc.md
requires: game-brief.md
optional_steps:
- competitive_analysis
- technical_research
notes: "Create detailed Game Design Document using game-design-doc-tmpl. Defines all gameplay mechanics, progression, and technical requirements. SAVE OUTPUT: Copy final game-design-doc.md to your project's docs/design/ folder."
- agent: game-designer
creates: level-design-doc.md
requires: game-design-doc.md
optional_steps:
- level_prototyping
- difficulty_analysis
notes: "Create level design framework using level-design-doc-tmpl. Establishes content creation guidelines and performance requirements. SAVE OUTPUT: Copy final level-design-doc.md to your project's docs/design/ folder."
- agent: solution-architect
creates: game-architecture.md
requires:
- game-design-doc.md
- level-design-doc.md
optional_steps:
- technical_research_prompt
- performance_analysis
- platform_research
notes: "Create comprehensive technical architecture using game-architecture-tmpl. Defines Unity systems, performance optimization, and code structure. SAVE OUTPUT: Copy final game-architecture.md to your project's docs/architecture/ folder."
- agent: game-designer
validates: design_consistency
requires: all_design_documents
uses: game-design-checklist
notes: Validate all design documents for consistency, completeness, and implementability. May require updates to any design document.
- agent: various
updates: flagged_design_documents
condition: design_validation_issues
notes: If design validation finds issues, return to relevant agent to fix and re-export updated documents to docs/ folder.
project_setup_guidance:
action: guide_game_project_structure
notes: Set up Unity project structure following game architecture document. Create Assets/ with subdirectories for Scenes, Scripts, Prefabs, etc.
workflow_end:
action: move_to_story_development
notes: All design artifacts complete. Begin story-driven development phase. Use Game Scrum Master to create implementation stories from design documents.
prototype_sequence:
- step: prototype_scope
action: assess_prototype_complexity
notes: First, assess if this needs full game design (use full_game_sequence) or can be a rapid prototype.
- agent: game-designer
creates: game-brief.md
optional_steps:
- quick_brainstorming
- concept_validation
notes: "Create focused game brief for prototype. Emphasize core mechanics and immediate playability. SAVE OUTPUT: Copy final game-brief.md to your project's docs/ folder."
- agent: game-designer
creates: prototype-design.md
uses: create-doc prototype-design OR create-game-story
requires: game-brief.md
notes: Create minimal design document or jump directly to implementation stories for rapid prototyping. Choose based on prototype complexity.
prototype_workflow_end:
action: move_to_rapid_implementation
notes: Prototype defined. Begin immediate implementation with Game Developer. Focus on core mechanics first, then iterate based on playtesting.
flow_diagram: |
```mermaid
graph TD
A[Start: Game Development Project] --> B{Project Scope?}
B -->|Full Game/Production| C[game-designer: game-brief.md]
B -->|Prototype/Game Jam| D[game-designer: focused game-brief.md]
C --> E[game-designer: game-design-doc.md]
E --> F[game-designer: level-design-doc.md]
F --> G[solution-architect: game-architecture.md]
G --> H[game-designer: validate design consistency]
H --> I{Design validation issues?}
I -->|Yes| J[Return to relevant agent for fixes]
I -->|No| K[Set up game project structure]
J --> H
K --> L[Move to Story Development Phase]
D --> M[game-designer: prototype-design.md]
M --> N[Move to Rapid Implementation]
C -.-> C1[Optional: brainstorming]
C -.-> C2[Optional: game research]
E -.-> E1[Optional: competitive analysis]
F -.-> F1[Optional: level prototyping]
G -.-> G1[Optional: technical research]
D -.-> D1[Optional: quick brainstorming]
style L fill:#90EE90
style N fill:#90EE90
style C fill:#FFE4B5
style E fill:#FFE4B5
style F fill:#FFE4B5
style G fill:#FFE4B5
style D fill:#FFB6C1
style M fill:#FFB6C1
```
decision_guidance:
use_full_sequence_when:
- Building commercial or production games
- Multiple team members involved
- Complex gameplay systems (3+ core mechanics)
- Long-term development timeline (2+ months)
- Need comprehensive documentation for team coordination
- Targeting multiple platforms
- Educational or enterprise game projects
use_prototype_sequence_when:
- Game jams or time-constrained development
- Solo developer or very small team
- Experimental or proof-of-concept games
- Simple mechanics (1-2 core systems)
- Quick validation of game concepts
- Learning projects or technical demos
handoff_prompts:
designer_to_gdd: Game brief is complete. Save it as docs/design/game-brief.md in your project, then create the comprehensive Game Design Document.
gdd_to_level: Game Design Document ready. Save it as docs/design/game-design-doc.md, then create the level design framework.
level_to_architect: Level design complete. Save it as docs/design/level-design-doc.md, then create the technical architecture.
architect_review: Architecture complete. Save it as docs/architecture/game-architecture.md. Please validate all design documents for consistency.
validation_issues: Design validation found issues with [document]. Please return to [agent] to fix and re-save the updated document.
full_complete: All design artifacts validated and saved. Set up game project structure and move to story development phase.
prototype_designer_to_dev: Prototype brief complete. Save it as docs/game-brief.md, then create minimal design or jump directly to implementation stories.
prototype_complete: Prototype defined. Begin rapid implementation focusing on core mechanics and immediate playability.
story_development_guidance:
epic_breakdown:
- Core Game Systems" - Fundamental gameplay mechanics and player controls
- Level Content" - Individual levels, progression, and content implementation
- User Interface" - Menus, HUD, settings, and player feedback systems
- Audio Integration" - Music, sound effects, and audio systems
- Performance Optimization" - Platform optimization and technical polish
- Game Polish" - Visual effects, animations, and final user experience
story_creation_process:
- Use Game Scrum Master to create detailed implementation stories
- Each story should reference specific GDD sections
- Include performance requirements (stable frame rate)
- Specify Unity implementation details (components, prefabs, scenes)
- Apply game-story-dod-checklist for quality validation
- Ensure stories are immediately actionable by Game Developer
game_development_best_practices:
performance_targets:
- Maintain stable frame rate on target devices throughout development
- Memory usage under specified limits per game system
- Loading times under 3 seconds for levels
- Smooth animation and responsive player controls
technical_standards:
- C# best practices compliance
- Component-based game architecture
- Object pooling for performance-critical objects
- Cross-platform input handling with the new Input System
- Comprehensive error handling and graceful degradation
playtesting_integration:
- Test core mechanics early and frequently
- Validate game balance through metrics and player feedback
- Iterate on design based on implementation discoveries
- Document design changes and rationale
success_criteria:
design_phase_complete:
- All design documents created and validated
- Technical architecture aligns with game design requirements
- Performance targets defined and achievable
- Story breakdown ready for implementation
- Project structure established
implementation_readiness:
- Development environment configured for Unity + C#
- Asset pipeline and build system established
- Testing framework in place
- Team roles and responsibilities defined
- First implementation stories created and ready