game-code-review

game-code-review is a skill for Claude Code from AlterLab-IEU/AlterLab_GameForge. It costs 96 tokens per session (5,116 once invoked), scanned A, original, MIT.

A code-review process designed for games as well as ordinary software quality. It checks issues such as frame independence, performance-sensitive update code, game state, and resource cleanup.

In plain words
What is it for?
Reviewing game architecture, checking runtime correctness and performance, examining state machines, and finding resource-lifecycle issues.
Why use it?
Game code can cause visible frame drops or broken gameplay when problems occur during repeated updates or state changes.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Good fit Reviewing game architecture, checking runtime correctness and performance, examining state machines, and finding resource-lifecycle issues.

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Install with agentmods
npx agentmods add skills/alterlab-ieu/alterlab_gameforge/game-code-review
Install

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.

Any agent
npx skills add AlterLab-IEU/AlterLab_GameForge --skill game-code-review
Clone the repo
git clone --depth 1 https://github.com/AlterLab-IEU/AlterLab_GameForge

Made for: Claude Code.

Wrote 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.

agentmods badge for game-code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/alterlab-ieu/alterlab_gameforge/game-code-review/github.svg)](https://agentmods.dev/skills/alterlab-ieu/alterlab_gameforge/game-code-review)
Your own site
<a href="https://agentmods.dev/skills/alterlab-ieu/alterlab_gameforge/game-code-review"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab_gameforge/game-code-review/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.

agentmods 80×15 button for game-code-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/alterlab-ieu/alterlab_gameforge/game-code-review"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab_gameforge/game-code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,116 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00096 $0.05116
Opus 5.5 $0.00038 $0.02046
Sonnet 5.5 $0.00019 $0.01023
Haiku 4.5 $0.00010 $0.00512

Measured 1mo ago against content hash 85a260d12f1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

game-code-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 1mo 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.

skills/workflows/game-code-review/SKILL.md · 528 lines

How it starts

The opening of the file, as written. The whole thing — 528 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AlterLab GameForge -- Game Code Review Workflow

Game code has failure modes that web code does not. A web app that allocates memory in a request handler costs you some latency. A game that allocates memory in an update loop costs you frame drops that players feel in their hands. A web app with a state management bug shows stale data. A game with a state management bug lets the player walk through walls or fire invisible bullets. Celeste's codebase is legendary precisely because Maddy Thorson and Noel Berry treated frame-perfect input handling as a first-class engineering concern -- and the result is the tightest platformer ever shipped.

This workflow reviews game code through two lenses simultaneously: standard software quality (naming, structure, testing, documentation) and game-specific correctness (frame independence, hot path performance, state machine integrity, resource lifecycle). Both lenses matter. Factorio maintains a million-entity simulation at 60fps because Wube Software treats architecture as a gameplay feature. Ignoring either lens produces code that is either well-structured but broken at runtime, or high-performing but unmaintainable.

Purpose & Triggers

Use this workflow when:

  • A developer asks "review my game code" or "check my architecture"
  • Before merging a significant feature branch
  • When debugging a performance issue and suspecting structural causes
  • When a new developer joins and needs to understand code quality standards
  • After prototyping, when deciding which code to promote to production
  • When transitioning from prototype to production-quality codebase

Problems this solves:

  • Frame rate drops caused by per-frame allocations nobody noticed
  • Physics that behave differently at 30fps vs 60fps vs 144fps
  • State machines that enter impossible states under edge conditions
  • Leaked resources on scene transitions causing gradual memory growth
  • Hardcoded gameplay values that require recompilation to tune
  • Circular dependencies that make systems impossible to test in isolation
  • Raw input handling scattered through gameplay code instead of abstracted

Read the full file on GitHub · 528 lines

Changes

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.

  1. 1mo ago First seen · 528 lines · 96 tokens per session scan A 85a260d12f1f

Subscribe to this mod's changes

game-code-review is a skill published in the GitHub repository AlterLab-IEU/AlterLab_GameForge (45 stars, last pushed 6mo ago), licensed MIT. It adds 96 tokens to every session and 5,116 once invoked, about $0.0004 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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