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 architecture-reviewgit 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/architecture-review)<a href="https://agentmods.dev/skills/donchitos/claude-code-game-studios/architecture-review"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/architecture-review.svg" alt="Measured on agentmods" height="20"></a>- 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 8 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 | $0.00071 | $0.06437 |
| Opus 5 | $0.00036 | $0.03218 |
| Sonnet 5 | $0.00014 | $0.01287 |
| Haiku 4.5 | $0.00007 | $0.00644 |
Grade A, and why
architecture-review 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 8d 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:
- architecture-review — 100% identical, 5 lines differ
- architecture-review — 88% identical, 72 lines differ
- architecture-review — 86% identical, 60 lines differ
- architecture-review — 86% identical, 60 lines differ
How it starts
The opening of the file, as written. The whole thing — 666 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Architecture Review
The architecture review validates that the complete body of architectural decisions covers all game design requirements, is internally consistent, and correctly targets the project's pinned engine version. It is the quality gate between Technical Setup and Pre-Production.
Argument modes:
- No argument /
full: Full review — all phases coverage: Traceability only — which GDD requirements have no ADRconsistency: Cross-ADR conflict detection onlyengine: Engine compatibility audit onlysingle-gdd [path]: Review architecture coverage for one specific GDDrtm: Requirements Traceability Matrix — extends the standard matrix to include story file paths and test file paths; outputsdocs/architecture/requirements-traceability.mdwith the full GDD requirement → ADR → Story → Test chain. Use in Production phase when stories and tests exist.
Phase 1: Load Everything
Phase 1a — L0: Summary Scan (fast, low tokens)
Before reading any full document, use Grep to extract ## Summary sections
from all GDDs and ADRs:
Grep pattern="## Summary" glob="design/gdd/*.md" output_mode="content" -A 4
Grep pattern="## Summary" glob="docs/architecture/adr-*.md" output_mode="content" -A 3
For single-gdd [path] mode: use the target GDD's summary to identify which
ADRs reference the same system (Grep ADRs for the system name), then full-read
only those ADRs. Skip full-reading unrelated GDDs entirely.
For engine mode: only full-read ADRs — GDDs are not needed for engine checks.
For coverage or full mode: proceed to full-read everything below.
Phase 1b — L1/L2: Full Document Load
Read all inputs appropriate to the mode:
Design Documents
- All in-scope GDDs in
design/gdd/— read every file completely design/gdd/systems-index.md— the authoritative list of systems
Architecture Documents
- All in-scope ADRs in
docs/architecture/— read every file completely docs/architecture/architecture.mdif it exists
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.
- 8d ago First seen · 666 lines · 71 tokens per session scan A 11fd3ee30b6c
architecture-review is a skill published in the GitHub repository Donchitos/Claude-Code-Game-Studios (24,880 stars, last pushed 3mo ago), licensed MIT. It adds 71 tokens to every session and 6,437 once invoked, about $0.0004 per session on Opus 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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game-concept-architect
A structured method for turning a one-sentence game idea into a testable design plan, covering player actions, the core loop, scope, assumptions, and validation.
achievements
Steam-style achievement system with XP, levels, streaks, and skill trees. Gamifies the development workflow. 25 achievements across 5 categories.
scene-architecture
Use when designing scene structure — single vs additive loading, bootstrap patterns, scene transitions, persistent managers, DontDestroyOnLoad decisions, and streaming world setups.
unity-ecs
Use when considering ECS/DOTS architecture — when to use ECS vs MonoBehaviour, Burst compiler, Job System, hybrid approaches, and migration strategies from MonoBehaviour to ECS.
unity-networking
Use when adding multiplayer or networked features — Netcode for GameObjects vs Mirror vs Fishnet decisions, authority models, state synchronization, lobby systems, and network architecture patterns.