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 quick-designgit 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/quick-design)<a href="https://agentmods.dev/skills/donchitos/claude-code-game-studios/quick-design"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/quick-design/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/quick-design"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/quick-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, 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 196 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- 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 | $0.00027 | $0.02825 |
| Opus 5.5 | $0.00011 | $0.01130 |
| Sonnet 5.5 | $0.00005 | $0.00565 |
| Haiku 4.5 | $0.00003 | $0.00282 |
Grade A, and why
quick-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
4 near-identical copies found in the catalogue:
- quick-design — 98% identical, 41 lines differ
- quick-design — 95% identical, 69 lines differ
- quick-design — 95% identical, 69 lines differ
- quick-design — 86% identical, 72 lines differ
How it starts
The opening of the file, as written. The whole thing — 314 lines — stays where its author put it; the contents beside it link to each section on GitHub.
!bash "${CLAUDE_SKILL_DIR}/../../hooks/yaml-helper.sh" resolve_config --keys automation,workflow
Quick Design
This is the lightweight design path for changes that don't need a full GDD.
Full GDD authoring via /design-system is the heavyweight path. Use this skill
for work under about one week of implementation — tuning adjustments, minor
behavioral tweaks, small additions to existing systems, or standalone features too
small to warrant a full document. Most tweaks are hours; the one-week ceiling is
the limit for a New Small System (see the categories below).
Output: design/quick-specs/[name]-[date].md
When to run: Anytime a change is too small for /design-system but too
meaningful to implement without a written rationale.
Every AskUserQuestion call follows .claude/docs/automation-modes.md
(collaborative asks always · guided major-only · autonomous logs and proceeds;
automation_always_ask categories always prompt).
1. Classify the Change
First, read the argument and determine which category this change falls into:
- Tuning — changing numbers or balance values in an existing system with no behavioral change (most minimal path). Example: "increase jump height from 5 to 6 units", "reduce enemy patrol speed by 10%".
- Tweak — a small behavioral change to an existing system that introduces no new states, branches, or systems. Example: "make dash invincible on frame 1", "allow combo to cancel into roll".
- Addition — adding a small mechanic to an existing system that may introduce 1-2 new states or interactions. Example: "add a parry window to the block mechanic", "add a charge variant to the basic attack".
- New Small System — a standalone feature small enough that it has no existing GDD and is under approximately one week of implementation work. Example: "achievement popup system", "simple day/night visual cycle".
If the change does NOT fit these categories — it introduces a new system with
significant cross-system dependencies, requires more than one week of
implementation, or fundamentally alters an existing system's core rules — stop
and redirect to /design-system instead. Verdict: REDIRECTED — use
/design-system for this change.
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.
- 4d ago Changed · +2 lines 32a4521f5290
- 24d ago Changed · +8 lines 90696274bde6
- 29d ago Changed 78f7c396b6d2
- 1mo ago Changed · +8 lines · -30 tokens per session 509655f14074
- 1mo ago First seen · 296 lines · 57 tokens per session scan A e1274daaef2d
quick-design is a skill published in the GitHub repository Donchitos/Claude-Code-Game-Studios (27,298 stars, last pushed 5d ago), licensed MIT. It adds 27 tokens to every session and 2,825 once invoked, about $0.0001 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 2026-09-03.
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