Game Design System

Game Design System is a Writing skill for Claude Code, published by Donchitos in Claude-Code-Game-Studios.

23.9K stars3.4K forkson Donchitos/Claude-Code-Game-StudiosAdded 2026/08/14Repository updated 2026/05/21

ai-agentsai-assisted-developmentanthropicclaudeclaude-codegame-designgame-developmentgamedevgodotindie-game-devunityunreal-engine

Install in seconds

Install Game Design System

Copy Game Design System into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/Donchitos/Claude-Code-Game-Studios/tree/main/docs/examples ~/.claude/skills/examples

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/Donchitos/Claude-Code-Game-Studios.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: docs/examples/session-design-system-skill.md in Donchitos/Claude-Code-Game-Studios
Installs to: ~/.claude/skills/examples
Collection: One of 25 skills cataloged from this repository
Category: Writing — 1012 skills

What Game Design System does

Game Design System guides Claude Code through an interactive, section-by-section process to author game design documents (GDDs), from Overview to Acceptance Criteria, with user approval at each step. Use it when you need a consistent, technically grounded per-system GDD ready for design review.

Game Design System is cataloged under Writing on DirSkills. Game Design System comes from a repository tagged ai-agents, ai-assisted-development, anthropic, claude and claude-code.

Documentation

README

Excerpt

Example Session: Using /design-system to Author a GDD

Context: Solo indie dev, week 3 of project. /map-systems already ran and produced design/gdd/systems-index.md. The movement system is listed as MVP tier, Foundation priority.

Starting State:

design/gdd/game-concept.md exists (survival-crafting game, 2D, Godot 4.6)
design/gdd/systems-index.md exists (15 systems identified, movement is first in design order)
No per-system GDDs written yet
No upstream dependencies for movement (it is the foundation)

Session Duration: ~60 minutes Turns: 14 Outcome: Complete design/gdd/movement-system.md with all 8 required sections written to file, ready for /design-review

Turn 1: User Invokes the Skill

User:

/design-system movement

This is the opening of the README. Read the full README on GitHub.

Commands Game Design System provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/design-system
/map-systems
/design-review

Frequently asked about Game Design System

What else does Donchitos publish alongside Game Design System?
Game Design System is one of 25 skills that DirSkills catalogs from Donchitos/Claude-Code-Game-Studios, the repository it ships in. Its siblings there include Adopt, Architecture Decision and Architecture Review. Each one is a separate skill with its own page in this directory, installs the same way Game Design System does, and is maintained by Donchitos in that same repository. The rest of the collection is listed on the Donchitos/Claude-Code-Game-Studios page.
How does Game Design System compare to other Writing skills?
Game Design System ranks #65 by stars among the 1012 Writing skills in this catalog. The most-starred ones next to it are Article Writing, Social Media Content Calendar and Knowledge Comic Creator. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Game Design System against them. Open each page to compare what they document and how they install.