Simon Willison's Battle Drones is an RTS that syncs multiplayer over sound
Built across 321 commits since July with coding agents doing nearly all the TypeScript, the browser game has fog of war, a 3D port and LLM-versus-LLM battles. Two phones in microphone range sync state through an audio modem the agent built. That required a deterministic simulation with custom sin and cos.
Simon Willison

