Gd Gdd Creation

GDD Creation

GDD Document Structure

Modular GDD: docs/design/gdd/

Modern GDD structure uses modular organization:

Main Document Template: docs/design/gdd.md (Optional)

# Game Design Document - [Project Name]

## Document Info
- **Version:** X.X.X
- **Last Updated:** YYYY-MM-DD
- **Author:** Game Designer Agent
- **Status:** Draft | Review | Approved

---

## 1. Overview

### 1.1 High Concept
One to two sentence summary of the game.

### 1.2 Elevator Pitch
A 30-second pitch that hooks the listener.

### 1.3 Target Audience
- Primary audience: [description]
- Secondary audience: [description]
- Age rating: [ESRB/PEGI rating]

### 1.4 Platforms
- Target platforms: [list]
- Technical constraints: [list]

### 1.5 Unique Selling Points
- USP 1: [description]
- USP 2: [description]
- USP 3: [description]

---

## 2. Core Gameplay

### 2.1 Game Loop
[Minute-by-minute breakdown of player experience]

### 2.2 Core Mechanics
[Primary game systems and rules]

### 2.3 Win/Lose Conditions
- Victory conditions: [list]
- Defeat conditions: [list]
- Draw conditions: [if applicable]

### 2.4 Session Length
- Target session duration: [X minutes]
- Match duration: [Y minutes]
- Expected engagement: [Z hours/week]

---

## 3. Mechanics

### 3.1 Movement
[How players move through the world]

### 3.2 Combat/Interaction
[How players interact with the game world]

### 3.3 Progression
[How players advance/grow]

### 3.4 Special Systems
[Unique mechanics that don't fit elsewhere]

---

## 4. Characters & Classes

### 4.1 Character Archetypes
[List of character types]

### 4.2 Abilities & Skills
[What characters can do]

### 4.3 Stats & Attributes
[Character properties]

### 4.4 Customization
[How players personalize characters]

---

## 5. Weapons & Items

### 5.1 Weapon Categories
[Types of weapons]

### 5.2 Item System
[How items work]

### 5.3 Balance Considerations
[Rock-paper-scissors relationships]

---

## 6. Level Design

### 6.1 Map Layout Principles
[Design philosophy for levels]

### 6.2 Flow Analysis
[How players move through spaces]

### 6.3 Spawn Points
[Where players enter/exit]

### 6.4 Key Locations
[Important places in levels]

---

## 7. UI/UX

### 7.1 HUD Elements
[What's shown on screen]

### 7.2 Menu Flow
[Navigation structure]

### 7.3 Controls
[Input schemes per platform]

### 7.4 Accessibility
[Inclusive design features]

---

## 8. Progression

### 8.1 Leveling System
[How players advance]

### 8.2 Rewards
[What players earn]

### 8.3 Economy
[Currency systems, sinks/faucets]

---

## 9. Multiplayer (if applicable)

### 9.1 Match Structure
[How matches are formed]

### 9.2 Team Balancing
[How teams are composed]

### 9.3 Network Considerations
[Latency handling, sync strategy]

---

## 10. Audio/Visual

### 10.1 Art Style
[Visual direction]

### 10.2 Sound Design
[Audio philosophy]

### 10.3 Music
[Music approach]

---

## 11. Technical Considerations

### 11.1 Platform Constraints
[Technical limitations]

### 11.2 Performance Targets
[FPS, load times, etc.]

### 11.3 Localization
[Language support]

---

## Appendix

### Glossary
[Game-specific terminology]

### References
[Inspiration games, documents]

Supporting Artifacts

The GDD is supported by separate documents:

GDD Creation Workflow

Step 1: Repository Analysis

Gather context about the project:

# Read project files for context
Read("README.md")
Read("package.json")
Read("prd.json")
Glob("src/**/*")  # List source files

Document:

• Project type and genre
• Current implementation status
• Technology stack
• Team size and structure

Step 2: Research Phase

Use web-search and GitHub MCP:

• Research similar games
• Find reference implementations
• Document inspirations
• Identify best practices

Step 3: Design Sessions

Use thermite-design skill for structured sessions:

• Boardroom Retreat for core concepts
• Deep Dive for specific domains
• Decision Review for validation

Step 4: Draft GDD

Create the main GDD document with all sections.

Step 5: Iterate

Refine through self-iteration and team feedback.

GDD Review Checklist

Before marking GDD as ready:

Completeness

• All 11 main sections complete
• Supporting artifacts created
• Decision log has initial entries
• Open questions tracked

Quality

• Clear, unambiguous language
• No contradictions within document
• All mechanics described in detail
• Art style is specific

Usability

• Table of contents for navigation
• Cross-references between sections
• Change log maintained
• Glossary for game-specific terms

GDD Maintenance

When to Update

Update GDD when:

• New mechanics are added
• Existing mechanics change significantly
• Balance changes are implemented
• New features are planned
• Team requests clarification

Change Log

Maintain a change log in the GDD:

## Change Log

| Date | Author | Changes |
|------|--------|---------|
| 2025-01-21 | Game Designer | Initial draft |
| 2025-01-22 | Game Designer | Added combat section |

UI/UX Feature Documentation (feat-027)

Lesson from feat-027 (Star Rating Preview): UI features require specific visual and behavior documentation.

UI Feature Section Template

When documenting UI features in GDD, use this structure:

### 8. UI/UX System

#### 8.1 HUD Elements

**Star Rating Preview**
- **Purpose**: Show player progress toward star ratings in real-time
- **Position**: Center-top of screen (y: 80 from top)
- **Elements**: 3 star icons displayed horizontally

**Behavior Specification**:
1. **Initial State**: All stars shown as outline (gray, 30% alpha)
2. **Fill Progression**: Stars fill sequentially as score increases
3. **Visual Feedback**: Smooth color transition (gray → yellow)
4. **Animation Timing**: 300ms tween duration with Quadratic.Out easing
5. **Completed State**: Filled stars pulse subtly (scale 1.1)

**Threshold Formula** (from DEC-004):
- 2-star: 32,000 + (level × 2,000)
- 3-star: 66,000 + (level × 6,000)

**Technical Notes**:
- Score updates trigger immediate star state recalculation
- Tweens killed before creating new ones (prevent accumulation)
- Event-driven: Listens to `totalScoreUpdate` events

UI Animation Documentation

When UI elements have animations:

Interactive UI Elements

For buttons and interactive UI:

#### Retry Button (feat-028)
- **Position**: Top-right corner, semi-transparent
- **Behavior**: Instant level reset on click
- **States**: Normal, Hover (brighten), Active (scale 0.95)
- **Accessibility**: 48×48px minimum touch target

#### Settings Button (feat-028)
- **Position**: Top-right, below retry button
- **Opens**: Settings overlay with:
  - Master volume slider (0-100%)
  - SFX volume slider (0-100%)
  - Music volume slider (0-100%)
  - Mute toggle checkbox
  - Quality toggle (Low/Medium/High)
- **Persistence**: All settings saved to localStorage

Visual Design Language

When specifying UI appearance:

**Color System**:
- Star Empty: #CCCCCC (RGB: 204, 204, 204)
- Star Full: #FFCC00 (RGB: 255, 204, 0)
- Background: Semi-transparent black

**Typography**:
- Font: Rajdhani or similar gaming font
- Sizes: 18px body, 24px headers
- Weights: 500 (regular), 600 (semibold), 700 (bold)

**Spacing System**:
- Star spacing: 8px gap between stars
- Button padding: 12px vertical, 24px horizontal
- Section margins: 16px between UI groups

Common Mistakes to Avoid

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