Simon Willison builds an audio-networked game with Claude Code
What happened
On 16 October 2026, Simon Willison published an article saying he used Claude Opus 5.5 Extra in Claude Code to build Chirp Pong, a two-player competitive game. The game runs as static HTML on two phones, sends chirp audio through the microphone, and uses the Web microphone API to parse the audio and synchronise game state. Players can compete by bringing the two phones close together, and the game adds graphical and gameplay variations on top of pong.
Written by AI from the reports · updated 10 h ago
Timeline
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- Simon WillisonChirp Pong
Tool: Chirp Pong Another game experiment - I wanted to see if it was feasible to have a two player game on two separate phones running in static HTML where the networking code uses chirps sent via the microphone. It seems to work!
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