ParticleGame

A falling-sand physics sandbox (think Noita’s element playground) built in Godot 4 — sand piles, liquids flow, materials interact cell by cell. The game is fun; the experiment is the point: it was built by an autonomous overnight loop in which Claude and Gemini alternated as implementer and reviewer, committing progress unattended while I slept.

That makes it less a game project and more a live probe of a question I keep working on: how far can unattended agentic development actually get, and where does it stall? The answers showed up concretely — where the loop needed a human ruling, where cross-model review caught real bugs, and where hard git-push guardrails had to stop the swarm from doing something irreversible. Lessons from this run fed straight back into my agent harness and into Evolver’s design.

GDScript, Godot 4, multi-agent AI tooling. Private.