Design Document

The GDD

What is a Game Design Document (GDD for short)?

Generally speaking, it is highly detailed covering all aspects of the game. From high level concepts as genre and target audience right down to control support and target platforms. It also helps to keep development organized and in line with the end goal.

Is It Needed?

Probably not, but it's definitely not a bad idea to at least jot down some pointers on what the finished product should look and feel like. The larger the concept, the more you should think about making one.

In some cases you may actually need to create one, even if you have already finished the game. Publishers and console applications will quite often ask for one to be created if you haven't. They'll use this to ensure your game is a good fit for their environment.

What A Game Design Document Might Contain

This is just an idea - There is no perfect document.

Game Overview

Game Title
Genre
Platform(s)
Target Audience
Unique Selling Points
Game Summary

Gameplay Mechanics

Core Mechanics
Controls
Game Modes
Objectives
Progression

Story and Characters

Story Overview
Main Characters
Supporting Characters
Narrative Structure

World Design

World Overview
Key Locations
Level Design
Environmental Interactions

Art and Visuals

Art Style
Character Design
Environment Design
User Interface (UI)

Sound and Music

Music Style
Sound Effects
Voice Acting

Technical Specifications

Engine
Hardware Requirements
Software Requirements
Technical Constraints

User Interface (UI)

HUD (Heads-Up Display)
Menus
Inventory System
Other UI Elements

Multiplayer

Multiplayer Modes
Networking
Matchmaking
Social Features

Monetization

Pricing Model
In-Game Purchases
Ads

Marketing and Distribution

Marketing Plan
Distribution Channels
Community Engagement

Development Timeline

Milestones
Deadlines
Deliverables

Appendices

Concept Art
Prototype Screenshots
Additional References