GenieGuard

GenieGuard is a “World-Sim CI” pipeline that automatically audits and self-repairs physics in AI-generated games/simulators. It injects physics bugs into a Matter.js world, collects telemetry + screenshots, and diagnoses issues with Gemini 3.1 Pro Preview using a multi-agent VLM workflow: a Vision Analyst (screenshots) and a Physics Analyst (telemetry/config) run in parallel, then a Repair Synthesizer cross-validates findings to output a safe JSON patch (config diffs only, no code generation). Patches are gated by a sandbox (whitelist + value-range validation), applied to config.js, the sim auto-reloads, and the system re-verifies all invariants. If verification fails, GenieGuard runs a self-reflection loop to re-diagnose and retry. Result: a closed-loop CI step that turns “physics hallucinations” into a deterministic, repeatable QA + repair workflow for game developers.