Simon Willison builds Chirp Pong: two phones syncing game state via audio chirps, in static HTML
Simon Willison · rss · 2026-10-16
Simon Willison shared Chirp Pong, a game experiment where two players on separate phones play a competitive Pong variant with game state transmitted via audio chirps picked up by the web microphone API — all in static HTML with no networking. He prompted for graphical and gameplay twists on Pong and built it with Claude Opus 5.5 Extra in Claude Code, proving audio-based peer-to-peer data transfer is feasible in the browser.
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