Typing game built with Claude Opus 5.5 in just 2 prompt iterations
danjr000 · reddit · 2026-09-27
A Reddit user built Stillwater, a relaxing typing game inspired by Monkeytype, using Claude Opus 5.5 (Medium effort) with only two prompt/feedback iterations: stars appear and connect into constellations as you type, alongside WPM/accuracy tracking.
- The author designed the concept; Opus handled implementation. The first version had fake constellations and was fixed after one feedback round.
- Later iterations added multiple scene options and most-missed-key tracking.
- The live user counter uses a Netlify serverless function with Upstash Redis, anonymous browser IDs, and heartbeats/expiration—no accounts needed.
A neat showcase of how far frontier coding models get in a single shot.
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