arcade

Classic desktop games as Claude Code mods, played in a pane while Claude works.

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  ●   ●    Mines 8 · Time 0:17 · Best 0:42 · By Reporails
    ω      34 safe cells left.
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Each game is its own plugin, so you install only the ones you want.

Install

In a Claude Code session:

/plugin marketplace add reporails/arcade
/plugin install minefield@reporails-arcade

Or from your shell, then /reload-plugins in any session already open:

claude plugin marketplace add reporails/arcade
claude plugin install minefield@reporails-arcade

Then run the game's command, such as /mines.

Requirements

• Claude Code 2.1.287 or later, where mods are on by default. Each game's README says what to check if one does not start.
• A terminal, or the Claude Code desktop app. VS Code and claude -p have nothing to draw a board on; the game says so.
• For the side pane and the mouse, the fullscreen layout: start Claude Code with CLAUDE_CODE_NO_FLICKER=1. Without it the pane sits above the prompt and the games are played with the keys alone.

What a game can see

These mods draw a pane and keep a best time in their own store. They hook no prompt, tool or attachment, so they read and change nothing the model sees, and they make no network calls. Run claude plugin validate <game> to list exactly what a game hooks and calls, before any of its code runs.

What the model does read is your CLAUDE.md and the rest of your instructions. To see which of them Claude actually follows: reporails.com.

Develop

The games are strict TypeScript. Each game folder is a complete plugin:

claude --plugin-dir ./minefield              # play it from the checkout
claude -p "/plugin-types" < /dev/null        # write the typings for your Claude Code build into .claude/types/
npx -p typescript@5.9.3 tsc -p .             # typecheck every game and its tests
claude plugin validate --strict ./minefield  # what it hooks and calls, and anything the engine would refuse
claude plugin test ./minefield               # its tests

/plugin-types runs without a login on 2.1.285, behind CLAUDE_CODE_ENABLE_FUNCTION_HOOKS=1; from 2.1.287 claude -p asks for one. So CI (.github/workflows/check.yml) runs on every push to main and every pull request, in two jobs: the typecheck, validation and tests on 2.1.285, and the validation and tests again on 2.1.288, where mods are on by default. The typings are generated, never committed: Claude Code's own license does not allow redistributing them.

A new game is a new folder plus one entry in .claude-plugin/marketplace.json.

License

MIT. Made by Reporails, diagnostics for the instructions that steer Claude Code.