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BMGD vs BMM

BMGD (BMad Game Development) extends BMM (BMad Method) with game-specific capabilities. This page explains the key differences.

Quick Comparison

Section titled “Quick Comparison”
AspectBMMBMGD
FocusGeneral softwareGame development
AgentsPM, Architect, Dev, SM, TEA, Solo DevGame Designer, Game Dev, Game Architect, Game SM, Game QA, Game Solo Dev
PlanningPRD, Tech SpecGame Brief, GDD
TypesN/A24 game type templates
NarrativeN/AFull narrative workflow
TestingWeb-focusedEngine-specific (Unity, Unreal, Godot)
ProductionBMM workflowsBMM workflows with game overrides

Agent Differences

Section titled “Agent Differences”

BMM Agents

Section titled “BMM Agents”
  • PM (Product Manager)
  • Architect
  • DEV (Developer)
  • SM (Scrum Master)
  • TEA (Test Architect)
  • Quick Flow Solo Dev

BMGD Agents

Section titled “BMGD Agents”
  • Game Designer
  • Game Developer
  • Game Architect
  • Game Scrum Master
  • Game QA
  • Game Solo Dev

BMGD agents understand game-specific concepts like:

  • Game mechanics and balance
  • Player psychology
  • Engine-specific patterns
  • Playtesting and QA

Planning Documents

Section titled “Planning Documents”

BMM Planning

Section titled “BMM Planning”
  • Product Brief → PRD → Architecture
  • Focus: Software requirements, user stories, system design

BMGD Planning

Section titled “BMGD Planning”
  • Game Brief → GDD → Architecture
  • Focus: Game vision, mechanics, narrative, player experience

The GDD (Game Design Document) includes:

  • Core gameplay loop
  • Mechanics and systems
  • Progression and balance
  • Art and audio direction
  • Genre-specific sections

Game Type Templates

Section titled “Game Type Templates”

BMGD includes 24 game type templates that auto-configure GDD sections:

  • Action, Adventure, Puzzle
  • RPG, Strategy, Simulation
  • Sports, Racing, Fighting
  • Horror, Platformer, Shooter
  • And more…

Each template provides:

  • Genre-specific GDD sections
  • Relevant mechanics patterns
  • Testing considerations
  • Common pitfalls to avoid

Narrative Support

Section titled “Narrative Support”

BMGD includes full narrative workflow for story-driven games:

  • Narrative Design workflow
  • Story structure templates
  • Character development
  • World-building guidelines
  • Dialogue systems

BMM has no equivalent for narrative design.

Testing Differences

Section titled “Testing Differences”

BMM Testing (TEA)

Section titled “BMM Testing (TEA)”
  • Web-focused (Playwright, Cypress)
  • API testing
  • E2E for web applications

BMGD Testing (Game QA)

Section titled “BMGD Testing (Game QA)”
  • Engine-specific frameworks (Unity, Unreal, Godot)
  • Gameplay testing
  • Performance profiling
  • Playtest planning
  • Balance validation

Production Workflow

Section titled “Production Workflow”

BMGD production workflows inherit from BMM and add game-specific:

  • Checklists
  • Templates
  • Quality gates
  • Engine-specific considerations

This means you get all of BMM’s implementation structure plus game-specific enhancements.

When to Use Each

Section titled “When to Use Each”

Use BMM when:

Section titled “Use BMM when:”
  • Building web applications
  • Creating APIs and services
  • Developing mobile apps (non-game)
  • Any general software project

Use BMGD when:

Section titled “Use BMGD when:”
  • Building video games
  • Creating interactive experiences
  • Game prototyping
  • Game jams
Section titled “Related”