Design Change Propagation
Donchitos/Claude-Code-Game-Studios
Finds architecture decision records made stale by a changed game design document, then reports the impact and guides you through resolving each one.
Create lightweight, living game design documents for AI-built games.
Install Game Design Docs
$ npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins game-design-docs --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/game-design-docs .claude/skills/game-design-docs && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "game-design-docs" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/game-design-docs into .claude/skills/game-design-docs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design-docs", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/game-design-docsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins game-design-docs --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/game-design-docs .agents/skills/game-design-docs && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "game-design-docs" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/game-design-docs into .agents/skills/game-design-docs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design-docs", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins game-design-docs --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/game-design-docs .cursor/skills/game-design-docs && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "game-design-docs" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/game-design-docs into .cursor/skills/game-design-docs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design-docs", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/hashgraph-online/awesome-codex-plugins.git --path plugins/LVTD-LLC/skills/skills/game-design-docs--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins game-design-docs --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/game-design-docs .gemini/skills/game-design-docs && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "game-design-docs" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/game-design-docs into .gemini/skills/game-design-docs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design-docs", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install hashgraph-online/awesome-codex-plugins game-design-docsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/game-design-docs .github/skills/game-design-docs && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "game-design-docs" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/game-design-docs into .github/skills/game-design-docs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design-docs", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install hashgraph-online/awesome-codex-plugins game-design-docs --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/hashgraph-online/awesome-codex-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/LVTD-LLC/skills/skills/game-design-docs .opencode/skills/game-design-docs && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "game-design-docs" agent skill from https://github.com/hashgraph-online/awesome-codex-plugins/tree/main/plugins/LVTD-LLC/skills/skills/game-design-docs into .opencode/skills/game-design-docs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design-docs", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
game-design-docs- GitHub stars
- 1.2k
- Token cost
- ~516 tokens
- SKILL.md length
- 206 words
- Files
- 3 (incl. references)
- Skills in repo
- 686
- Repo updated
- First seen
- Licence
- MIT
At a glance
Create lightweight, living game design documents for AI-built games.
- Works in 5 steps: Decide the document's job: alignment,… → Keep stable intent separate from… → Capture decisions, rejected… → …
- Writing a game design brief
- SKILL.md covers Source Traceability, Workflow, Required Output and Local References
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Game Design Docs is an agent skill from hashgraph-online/awesome-codex-plugins. Create lightweight, living game design documents for AI-built games. Use when writing a game design brief, system spec, feature contract, content schema, implementation handoff, decision log, or when a coding agent needs durable project memory.
Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `references/core/guide.md` and `workflows/living-design-doc.md`). Compatibility notes: Codex, Claude Code, and other Agent Skills-compatible clients.
It sits in Game Development, covering Game design and Architecture decision records. The repository describes itself as: A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The 1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins. The licence is MIT.
When your agent uses it
- Writing a game design brief
- Feature contract
- Implementation handoff
- A coding agent needs durable project memory
Example prompts
- “/game-design-docs”
Requirements
- Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients.
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Decide the document's job: alignment, implementation, content production, tuning, playtest, or memory.
- Keep stable intent separate from volatile implementation details.
- Capture decisions, rejected alternatives, open questions, and validation evidence.
- Link specs to code, data, assets, tests, and telemetry when possible.
- Update docs after design decisions, not after every small code edit.
What it can do on your machine
Read from SKILL.md and the folder at commit 78497e5. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Codex, Claude Code, and other Agent Skills-compatible clients.
From compatibility in the SKILL.md frontmatter.
Context cost
Game Design Docs loads about 516 tokens when it runs, and up to ~909 if it reads all its reference files. Until then it costs about 65 tokens; SKILL.md has 206 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from hashgraph-online/awesome-codex-plugins at commit 78497e5, republished under its MIT licence (© hashgraph-online). 206 words, ~516 tokens.
Download SKILL.mdSave it as
.claude/skills/game-design-docs/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- game-design-docs
- description
- Create lightweight, living game design documents for AI-built games. Use when writing a game design brief, system spec, feature contract, content schema, implementation handoff, decision log, or when a coding agent needs durable project memory.
- compatibility
- Codex, Claude Code, and other Agent Skills-compatible clients.
- license
- MIT
- metadata.version
- 0.1.0
- metadata.displayName
- Game Design Docs
- metadata.category
- Game Development
- metadata.tags
- game-design,documentation,specs,ai-agents,production
Game Design Docs
Use this skill to create documents that help an AI game-building agent make consistent decisions across sessions. The document should be short enough to stay current and specific enough to constrain implementation.
Source Traceability
Primary source: The Art of Game Design: A Book of Lenses, Third Edition by Jesse Schell, especially chapter 27 on design documents and team communication. The workflow is transformed and paraphrased.
Supporting source: the rest of the game skill pack, which turns design lenses into implementable briefs.
Workflow
- Decide the document's job: alignment, implementation, content production, tuning, playtest, or memory.
- Keep stable intent separate from volatile implementation details.
- Capture decisions, rejected alternatives, open questions, and validation evidence.
- Link specs to code, data, assets, tests, and telemetry when possible.
- Update docs after design decisions, not after every small code edit.
Required Output
Doc Type: brief, system spec, feature contract, tuning sheet, content schema, playtest report, or decision log.Canonical Sections: concise headings suited to the doc type.Open Questions: unresolved decisions with owner or next evidence.Implementation Contract: what the agent should build, avoid, test, and instrument.Maintenance Rule: when this doc must be updated.
Local References
Before producing a design document, read:
references/core/guide.mdworkflows/living-design-doc.md
© hashgraph-online, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 2 other files (references) in plugins/LVTD-LLC/skills/skills/game-design-docs of hashgraph-online/awesome-codex-plugins.
- SKILL.md
- references/core/guide.md
- workflows/living-design-doc.md
Open the folder on GitHubat commit 78497e5
Compare with similar skills
Game Design Docs next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Game Design Docs this skillhashgraph-online/awesome-codex-plugins | 1.2k | — | ~516 | Automated safety check: Pass | MIT | |
| Design Change PropagationDonchitos/Claude-Code-Game-Studios | 26k | — | ~3.6k | Automated safety check: Notes | MIT | |
| AdoptDonchitos/Claude-Code-Game-Studios | 26k | — | ~6.4k | Automated safety check: Notes | MIT | |
| Reverse DocumentationDonchitos/Claude-Code-Game-Studios | 26k | — | ~4k | Automated safety check: Pass | MIT | |
| Architecture ReviewDonchitos/Claude-Code-Game-Studios | 26k | — | ~9.8k | Automated safety check: Notes | MIT | |
| Story DoneDonchitos/Claude-Code-Game-Studios | 26k | — | ~11k | Automated safety check: Notes | MIT |
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Writes the missing GDD section, architecture decision record or concept document by reading existing code and prototypes.
Architecture Review
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Traceability matrix mapping GDD requirements to ADRs. An agent skill from Donchitos/Claude-Code-Game-Studios.
Story Done
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End-of-story completion review — verifies each acceptance criterion, checks GDD/ADR deviations, prompts code review, updates status.
Gameplay Design Sync
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Categories
Questions about Game Design Docs
What does Game Design Docs do?
Create lightweight, living game design documents for AI-built games. Game Design Docs is an agent skill from hashgraph-online/awesome-codex-plugins. Create lightweight, living game design documents for AI-built games.
When should I use Game Design Docs?
Game Design Docs fits situations like: writing a game design brief; feature contract; implementation handoff; A coding agent needs durable project memory.
How do I install Game Design Docs in Claude Code?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a claude-code`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/game-design-docs in hashgraph-online/awesome-codex-plugins) into .claude/skills/game-design-docs in your project. Claude Code loads it when a task matches its description.
How do I install Game Design Docs in Codex?
Run `npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a codex`. Or copy the skill folder (plugins/LVTD-LLC/skills/skills/game-design-docs in hashgraph-online/awesome-codex-plugins) into .agents/skills/game-design-docs in your project. Codex loads it when a task matches its description.
Can I use Game Design Docs in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add hashgraph-online/awesome-codex-plugins --skill game-design-docs -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/game-design-docs, .gemini/skills/game-design-docs, .github/skills/game-design-docs and .opencode/skills/game-design-docs in your project.
What does Game Design Docs need to run?
SKILL.md names no scripts, command-line tools or credentials: Game Design Docs is instructions for the agent only. Compatibility (from SKILL.md): Codex, Claude Code, and other Agent Skills-compatible clients..
Does Game Design Docs access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Game Design Docs safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Game Design Docs use?
Game Design Docs is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Game Design Docs use?
About 516 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 393 tokens, read only when the agent opens those files.
What are the alternatives to Game Design Docs?
Skills that share tags, products or a category with Game Design Docs: Design Change Propagation (Donchitos/Claude-Code-Game-Studios, 26k stars), Adopt (Donchitos/Claude-Code-Game-Studios, 26k stars), Reverse Documentation (Donchitos/Claude-Code-Game-Studios, 26k stars) and Architecture Review (Donchitos/Claude-Code-Game-Studios, 26k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Game Design Docs?
hashgraph-online (a GitHub organization) maintains it in hashgraph-online/awesome-codex-plugins, which has 1,242 GitHub stars. The repository holds 686 skills in this directory. The repository was last updated on October 8, 2026.
Source: hashgraph-online/awesome-codex-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.