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CRUMB

Generative Game Studio · Demo

From a one-line game pitch to a playable draft, with the agents’ work in view and open to intervention.

CRUMB is a multi-agent studio harness for casual game prototyping.

Design and development · built with AI coding agents

  • CLILocal demo
  • Web StudioLocal demo

From a one-line game pitch to a playable draft, with the agents’ work in view and open to intervention.

Demo video

Play

Development · demo

CRUMB + CRUMB Studio

Published (KST)

How the design of CRUMB and CRUMB Studio evolved, with a live session walkthrough. A Korean-language recording.

Watch on YouTube

Demo configuration · by provider

The demo repository’s catalog, kept as the exact strings the project wrote. It is neither the vendors’ current model list nor a record of verified runs.

  • Anthropic

    Claude Code CLI

    • claude-opus-4-7
    • claude-sonnet-4-6
    • claude-haiku-4-5

    The chosen model is not passed as a CLI argument, so this adapter does not establish which model actually ran.

  • OpenAI

    Codex CLI

    • gpt-5.5-codex
    • gpt-5.5
    • gpt-4o
    • gpt-4o-mini

    The chosen ID is forwarded to Codex --model. Compatibility was not tested with a live call.

  • Google

    Gemini CLI

    • gemini-3.1-pro-preview
    • gemini-3-pro
    • gemini-2.5-pro
    • gemini-2.5-flash
    • gemini-2.0-flash

    The chosen model is not passed as a CLI argument, and the adapter itself calls its flags a best guess pending runtime verification.

The initial config seeds Haiku 4.5 for the coordinator and Opus 4.7 for planner, builder and verifier; the ambient fallback is Sonnet 4.6. Precedence runs CLI bindings > config > preset > ambient > fallback, so no single model is always used. The mock’s fixture-v1 is a deterministic fixture, not a model.

Sourcemain f5e17c0Public commit May 7, 2026 · checked October 8, 2026