Claude Opus 5.5 built a full adaptive typing game from one prompt, now open source
Rare_Guide_9830 · reddit · 2026-10-01
A Reddit user had Claude Opus 5.5 build a complete typing game, Outpace, from a single prompt — now free to play (outpace.ethanplus.ai) and open source (github.com/ethanplusai/outpace), with a global leaderboard. The prompt specified adaptive difficulty, optional GitHub/X avatar display, full responsiveness, visual self-testing with iteration, and Sonnet 5.5 subagents for parallel well-defined tasks with separate usage tracking. The author invites leaderboard challenges and repo contributions.
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