Chicken coop simulator game in Claude using UE 5.8 using real motions from the robote

Short version: the “chickens” aren’t animated. Each one is a Microduck biped running an ONNX walking policy I trained in MuJoCo, so the wobble you see is a real robot gait, not keyframes. Claude assembled most of the scene around them through an MCP server running inside the editor. Why I built it I needed a stress test. A walking policy looks fine when one robot is alone on flat ground. I wanted to know what happens with \[N\] of them crowding a feeder, bumping each other, and getting shoved off balance — and a coop is a cheap excuse to get dozens of agents doing exactly that. The game part came second, honestly. How it works • Policy trained in MuJoCo on a single RTX 3090 Ti, 4096 parallel envs. • Exported to ONNX, inference runs in-engine in UE 5.8. Every bird ticks the same network with its own observation vector. • The feeder is just a goal position. The policy handles locomotion, a thin steering layer on top handles who goes where and stops them from stacking…