Chirp Pong

Summary

The author built a two-player pong-style game that runs as static HTML on two separate phones, using the web microphone API. Game state is exchanged as audio chirps played through the speakers and decoded by the microphone, and the author reports that the approach works. The game adds graphical and gameplay twists beyond classic pong, and was built with Claude Opus 5.5 Extra in Claude Code.

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