Claude Code Game Studios is a setup that organizes Claude Code into a coordinated game-development team of specialized AI agents. It supports game projects across design, programming, art, audio, narrative, quality assurance, and production, with skills and workflows for coordinating that work.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Donchitos/Claude-Code-Game-Studios --skill brainstormgit clone --depth 1 https://github.com/Donchitos/Claude-Code-Game-StudiosWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/donchitos/claude-code-game-studios/brainstorm)<a href="https://agentmods.dev/skills/donchitos/claude-code-game-studios/brainstorm"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/brainstorm/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/donchitos/claude-code-game-studios/brainstorm"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/brainstorm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 7 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00047 | $0.01335 |
| Opus 5.5 | $0.00019 | $0.00534 |
| Sonnet 5.5 | $0.00009 | $0.00267 |
| Haiku 4.5 | $0.00005 | $0.00134 |
Grade A, and why
brainstorm scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
4 near-identical copies found in the catalogue:
- brainstorm — 91% identical, 406 lines differ
- concept-brainstorm — 84% identical, 77 lines differ
- brainstorm — 83% identical, 398 lines differ
- brainstorm — 83% identical, 398 lines differ
How it starts
The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
!bash "${CLAUDE_SKILL_DIR}/../../hooks/yaml-helper.sh" resolve_config --keys review_mode,automation,docs.density,workflow
Resolved above; use as-is. No block → the defaults in .claude/docs/config-resolution.md
(workflow: minimal, review_mode: solo, automation: collaborative, docs.density: terse), and
say that the settings were not read.
Brainstorm
Turns no idea, or a rough one, into a written design the next step builds from. How much it writes
depends on workflow:
minimal: the Lean Brief flow below: a one-pagedesign/game-brief.md, then stop. No discovery questions, pillars, director gates orgame-concept.md, and do not loadreferences/full-concept.md.standardorfull: readreferences/full-concept.mdand follow it. It writesdesign/gdd/game-concept.mdfrom.claude/docs/templates/game-concept.md. Its gates follow.claude/docs/director-gates.md; each director agent is given its own gate file,.claude/docs/director-gates/<gate-id in lower case>.md(cd-pillars.md,ad-concept-visual.md,td-feasibility.md,pr-scope.md), and you do not read those files yourself.
--review in the text typed after the skill name overrides review_mode for this run.
docs.density sets each section's depth: terse = bullets; balanced = with brief rationale;
thorough = rationale and alternatives. Questions follow .claude/docs/automation-modes.md
(collaborative asks, guided asks only for major decisions, autonomous logs and proceeds; the
always-ask categories always ask).
Ask with the question tool. Without one, list the options numbered and end your turn to wait. The question is the last thing in the reply: no advice or lean after it. A skipped or dismissed question is not an answer: ask again in plain text.
Lean Brief flow (workflow: minimal)
A few exchanges, not fifteen: capture the thinking that carries the game on one page, then get to
code. Write from the template .claude/docs/templates/game-brief.md (six required fields, three
one-liners). If design/game-brief.md exists, read it and refine it instead of starting over.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today Changed · -391 lines · +28 tokens per session fa665de84aea
- 11d ago Changed · +2 lines f74b237707c5
- 20d ago Changed · +9 lines a7e0babdf368
- 25d ago Changed 86b3080265dc
- 26d ago Changed · +103 lines · -17 tokens per session 77a0167a6496
- 1mo ago First seen · 360 lines · 36 tokens per session scan A 3afbcc808948
brainstorm is a skill published in the GitHub repository Donchitos/Claude-Code-Game-Studios (26,893 stars, last pushed yesterday), licensed MIT. It adds 47 tokens to every session and 1,335 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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