Playable experiments. Each one is an Odin core that owns the rules and a Godot client that only draws — so the same core can run in your browser now and on a server later without being rewritten.
Three bodies on a field, moved with the arrow keys. Proves the pipe: an Odin core in WebAssembly, a Godot client that only draws, and a fixed 30 Hz simulation interpolated to the display's refresh rate.