ebitengine-game

ebitengine-game is a skill for Claude Code, Codex from gamedev-skills/awesome-gamedev-agent-skills. It costs 108 tokens per session (2,571 once invoked), scanned A, original, Apache-2.0.

A guide for creating, fixing, and packaging 2D games in Go with Ebitengine, a Go game library. It covers the game loop, input, drawing, text, sound, scenes, tests, and desktop, browser, or mobile builds.

In plain words
What is it for?
Use it to build or repair gameplay, rendering, controls, audio, scenes, tests, and platform packaging in an Ebitengine project.
Why use it?
It helps turn a game request into a playable result rather than stopping at a scaffold, successful build, or screenshot. It also keeps focused fixes limited to the affected behavior.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is go test ./world/....

Part of the gamedev plugin — 77 skills shipped together

Good fit Use it to build or repair gameplay, rendering, controls, audio, scenes, tests, and platform packaging in an Ebitengine project.

Compare 6 skills from other repositories ↓
About the project

awesome-gamedev-agent-skills is a collection of 73 instruction files that give AI coding agents specialized guidance for game development with engines and frameworks such as Godot, Unity, Unreal, and Phaser. It helps agents choose relevant engine and task guidance while building games. The catalogue entries are the collection's skills and plugins for agents including Claude Code, Cursor, Codex, and Gemini CLI.

gamedev-skills/awesome-gamedev-agent-skills · 3,490 stars · on GitHub

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/gamedev-skills/awesome-gamedev-agent-skills
agentmods
npx agentmods add skills/gamedev-skills/awesome-gamedev-agent-skills/ebitengine-game

Made for: Claude Code, Codex.

Or install gamedev, the plugin that ships this one along with the rest of its 77 skills.

Its marketplace also offers this one on its own, as the plugin ebitengine — /plugin install ebitengine after adding the marketplace above.

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 ebitengine-game

README.md
[![agentmods](https://agentmods.dev/badge/skills/gamedev-skills/awesome-gamedev-agent-skills/ebitengine-game/github.svg)](https://agentmods.dev/skills/gamedev-skills/awesome-gamedev-agent-skills/ebitengine-game)
Your own site
<a href="https://agentmods.dev/skills/gamedev-skills/awesome-gamedev-agent-skills/ebitengine-game"><img src="https://agentmods.dev/badge/skills/gamedev-skills/awesome-gamedev-agent-skills/ebitengine-game/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 ebitengine-game

Your own site · 80×15
<a href="https://agentmods.dev/skills/gamedev-skills/awesome-gamedev-agent-skills/ebitengine-game"><img src="https://agentmods.dev/badge/skills/gamedev-skills/awesome-gamedev-agent-skills/ebitengine-game.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,571 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 $0.00108 $0.02571
Opus 5.5 $0.00043 $0.01028
Sonnet 5.5 $0.00022 $0.00514
Haiku 4.5 $0.00011 $0.00257

Measured today against content hash bbd4d03e12b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ebitengine-game 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.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/check_ebitengine.py, scripts/new_game.py, scripts/package_macos_app.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/ebitengine/ebitengine-game/SKILL.md · 207 lines

How it starts

The opening of the file, as written. The whole thing — 207 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ebitengine game

Deliver a game that is understandable, responsive and complete at the requested scope. One request can include several internal build/play/refine passes. A scaffold, successful build or attractive screenshot alone is not a finished game. For a focused fix, preserve the project's design and limit the workflow to the affected behavior.

The bundled starter targets Ebitengine v2.10.5 / Go 1.25+. This is a pinned baseline, not a claim about the latest release. Keep an existing project's versions unless an upgrade is needed and authorized. Check the pinned version's public API before using newer or experimental APIs. References contain patterns to adapt; only the bundled scripts and starter are executable deliverables. Their checks do not validate every reference snippet.

Delivery workflow

  1. Inspect and decide. Read repository instructions, go.mod, the RunGame entrypoint and existing tests/assets. For new games, read Design and quality. Establish the player's goal, repeated decision, consequence, end/retry path, intended look, platform and supported input. Infer reasonable defaults; ask only for missing choices that materially change the product. Record a short brief and observable acceptance criteria in the project.
  2. Build a representative playable slice. Make the central interaction and its feedback work with the intended controls and visual direction. Check the feel before expanding content. Keep scope small enough to finish; choose authored or procedural content based on the game, not the template. Calibrate content against actual player capabilities before multiplying levels. For an art set, establish shared perspective, scale, anchors and palette roles using Assets and animation.
  3. Complete and refine. Implement the promised start → play → outcome → retry/continue loop (or the appropriate persistent/sandbox loop). Refine hierarchy, animation, sound, difficulty and transitions in context. Read only the technical references needed for the selected systems. Fix discovered defects within this delivery rather than asking the user to iterate for you.
  4. Verify the product. Test rules and important transitions, exercise real input, inspect representative rendered states, and build/run requested targets. Include failure/retry and boundary cases. A scripted demo cannot establish control feel; a silent audio sink cannot establish sound quality. For automated multi-step interactions, pair observed images with actual state at the same tick; see Playtest diagnostics.
  5. Hand off. Supply launch/build instructions, actual artifact paths and asset licences. State what was run and observed, what remains unverified, and any material limitations. Publishing, purchases and external uploads are separate actions within the user's requested scope.

Read the full file on GitHub · 207 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. today First seen · 207 lines · 108 tokens per session scan A bbd4d03e12b5

Subscribe to this mod's changes

ebitengine-game is a skill published in the GitHub repository gamedev-skills/awesome-gamedev-agent-skills (3,490 stars, last pushed yesterday), licensed Apache-2.0. It adds 108 tokens to every session and 2,571 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 2026-10-24.

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