Documentation Creation Criteria

Templates

• prd-template.md - Product Requirements Document template
• adr-template.md - Architecture Decision Record template
• design-template.md - Technical Design Document template
• plan-template.md - Work Plan template
• task-template.md - Task file template for implementation tasks
• uxrd-template.md - UX Requirements Document template
• gdd-template.md - Game Design Document template
• market-analysis-template.md - Market Analysis template
• feature-spec-template.md - Feature Specification template
• analytics-setup-template.md - Analytics Setup template
• engine-setup-template.md - Engine Setup template
• handoff-template.md - Handoff Document template

Creation Decision Matrix

Condition	Required Documents	Creation Order
New Feature Addition	PRD → [ADR] → Design Doc → Work Plan	After PRD approval
ADR Conditions Met (see below)	ADR → Design Doc → Work Plan	Start immediately
6+ Files	ADR → Design Doc → Work Plan (Required)	Start immediately
3-5 Files	Design Doc → Work Plan (Recommended)	Start immediately
1-2 Files	None	Direct implementation
New Game Project	GDD → Market Analysis → [ADR] → Design Doc → Work Plan	After GDD approval
New Game Feature	Feature Spec → [GDD Update] → Design Doc → Work Plan	After Feature Spec approval
Art/Visual Change	Art Direction → Design Doc	After Art Direction approval

ADR Creation Conditions (Required if Any Apply)

1. Contract System Changes

• Adding nested contracts with 3+ levels: Contract A { Contract B { Contract C { field: T } } }
  • Rationale: Deep nesting has high complexity and wide impact scope
• Changing/deleting contracts used in 3+ locations
  • Rationale: Multiple location impacts require careful consideration
• Contract responsibility changes (e.g., DTO→Entity, Request→Domain)
  • Rationale: Conceptual model changes affect design philosophy

2. Data Flow Changes

• Storage location changes (DB→File, Memory→Cache)
• Processing order changes with 3+ steps
  • Example: "Input→Validation→Save" to "Input→Save→Async Validation"
• Data passing method changes (parameter passing→shared state, direct reference→event-based communication)

3. Architecture Changes

• Layer addition, responsibility changes, component relocation

4. External Dependency Changes

• Library/framework/external API introduction or replacement

5. Complex Implementation Logic (Regardless of Scale)

• Managing 3+ states
• Coordinating 5+ asynchronous processes

Detailed Document Definitions

PRD (Product Requirements Document)

Purpose: Define business requirements and user value

Includes:

• Business requirements and user value
• Success metrics and KPIs (measurable format)
• User stories and use cases
• MoSCoW prioritization (Must/Should/Could/Won't)
• MVP and Future phase separation
• User journey diagram (required)
• Scope boundary diagram (required)

Excludes:

• Technical implementation details (→Design Doc)
• Technical selection rationale (→ADR)
• Implementation phases (→Work Plan)
• Task breakdown (→Work Plan)

ADR (Architecture Decision Record)

Purpose: Record technical decision rationale and background

Includes:

• Decision (what was selected)
• Rationale (why that selection was made)
• Option comparison (minimum 3 options) and trade-offs
• Architecture impact
• Principled implementation guidelines (e.g., "Use dependency injection")

Excludes:

• Implementation schedule, duration (→Work Plan)
• Detailed implementation procedures (→Design Doc)
• Specific code examples (→Design Doc)
• Resource assignments (→Work Plan)

Design Document

Purpose: Define technical implementation methods in detail

Includes:

• Existing codebase analysis (required)
  • Implementation path mapping (both existing and new)
  • Integration point clarification (connection points with existing code even for new implementations)
• Technical implementation approach (vertical/horizontal/hybrid)
• Technical dependencies and implementation constraints (required implementation order)
• Interface and contract definitions
• Data flow and component design
• E2E verification procedures at integration points
• Acceptance criteria (measurable format)
• Change impact map (clearly specify direct impact/indirect impact/no ripple effect)
• Complete enumeration of integration points
• Data contract clarification
• Agreement checklist (agreements with stakeholders)
• Prerequisite ADRs (including common ADRs)

Required Structural Elements:

Change Impact Map:
  Change Target: [Component/Feature]
  Direct Impact: [Files/Functions]
  Indirect Impact: [Data format/Processing time]
  No Ripple Effect: [Unaffected features]

Interface Change Matrix:
  Existing: [Function/method/operation name]
  New: [Function/method/operation name]
  Conversion Required: [Yes/No]
  Compatibility Method: [Approach]

Excludes:

• Why that technology was chosen (→Reference ADR)
• When to implement, duration (→Work Plan)
• Who will implement (→Work Plan)

GDD (Game Design Document)

Purpose: Define game vision, core mechanics, progression, and systems

Includes:

• Core loop
• Game pillars
• Progression systems
• Balancing parameters
• Content specifications

Excludes:

• Technical implementation (→Design Doc)
• Market analysis (→Market Analysis)
• Art specifications (→Art Direction)

Market Analysis

Purpose: Validate market opportunity and competitive positioning

Includes:

• Competitor analysis
• Market sizing
• Target audience
• Monetization potential
• Risk assessment
• Go/No-Go recommendation

Excludes:

• Game design details (→GDD)
• Technical specs (→Design Doc)

Feature Specification

Purpose: Detailed specification of a single game feature or system

Includes:

• User stories
• Acceptance criteria
• Balancing parameters
• Edge cases

Excludes:

• Full game vision (→GDD)
• Implementation plan (→Work Plan)

Work Plan

Purpose: Implementation task management and progress tracking

Includes:

• Task breakdown and dependencies (maximum 2 levels)
• Schedule and duration estimates
• Copy E2E verification procedures from Design Doc (cannot delete, can add)
• Phase 4 Quality Assurance Phase (required)
• Progress records (checkbox format)

Excludes:

• Technical rationale (→ADR)
• Design details (→Design Doc)

Phase Division Criteria:

1. Phase 1: Foundation Implementation - Contract definitions, interfaces/signatures, test preparation
2. Phase 2: Core Feature Implementation - Business logic, unit tests
3. Phase 3: Integration Implementation - External connections, presentation layer
4. Phase 4: Quality Assurance (Required) - Acceptance criteria achievement, all tests passing, quality checks

Three Elements of Task Completion Definition:

1. Implementation Complete: Code is functional
2. Quality Complete: Tests, static checks, linting pass
3. Integration Complete: Verified connection with other components

Creation Process

1. Problem Analysis: Change scale assessment, ADR condition check
2. ADR Option Consideration (ADR only): Compare 3+ options, specify trade-offs
3. Creation: Use templates, include measurable conditions
4. Approval: "Accepted" after review enables implementation

Storage Locations

Document	Path	Naming Convention	Template
PRD	docs/prd/	[feature-name]-prd.md	prd-template.md
ADR	docs/adr/	ADR-[4-digits]-[title].md	adr-template.md
Design Doc	docs/design/	[feature-name]-design.md	design-template.md
Work Plan	docs/plans/	YYYYMMDD-{type}-{description}.md	plan-template.md
Task File	docs/plans/tasks/{plan-name}/	task-{number}.md	task-template.md
UXRD	docs/uxrd/	[feature-name]-uxrd.md	uxrd-template.md
GDD	docs/game-design/	[project-name]-gdd.md	gdd-template.md
Market Analysis	docs/market-research/	[project-name]-market-analysis.md	market-analysis-template.md
Feature Spec	docs/game-design/features/	[feature-name]-spec.md	feature-spec-template.md
Art Direction	docs/art/	[project-name]-art-direction.md	N/A
Analytics Setup	docs/analytics/	[project-name]-analytics.md	analytics-setup-template.md
Handoff	docs/handoffs/	[handoff-name]-handoff.md	handoff-template.md

*Note: Work plans are excluded by .gitignore

ADR Status

Proposed → Accepted → Deprecated/Superseded/Rejected

AI Automation Rules

• 5+ files: Suggest ADR creation
• Contract/data flow change detected: ADR mandatory
• Check existing ADRs before implementation

Diagram Requirements

Required diagrams for each document (using mermaid notation):

Document	Required Diagrams	Purpose
PRD	User journey diagram, Scope boundary diagram	Clarify user experience and scope
ADR	Option comparison diagram (when needed)	Visualize trade-offs
Design Doc	Architecture diagram, Data flow diagram	Understand technical structure
Work Plan	Phase structure diagram, Task dependency diagram	Clarify implementation order

Common ADR Relationships

1. At creation: Identify common technical areas (logging, error handling, async processing, etc.), reference existing common ADRs
2. When missing: Consider creating necessary common ADRs
3. Design Doc: Specify common ADRs in "Prerequisite ADRs" section
4. Compliance check: Verify design aligns with common ADR decisions