What it is
A browser Flappy Bird clone whose flapping decisions are made by TypeSafe's Jev model instead of a human player. Deployed as a Cloudflare Worker; game mechanics and assets come from CodeExplainedRepo/FlappyBird-JavaScript.
How it uses Jev
Each frame (keeping one request in flight) buildState() computes the bird's above/below offset from the gap center in px and pipe distance. POST /decide sends this state to the Worker, which asks Jev two noul questions (flap now? double-flap?). If flap > 0.5 the bird flaps; if double > 0.5 it flaps again.
Primitives:noul
Technique worth stealing
Use text like 'above by 79 px' instead of raw numbers; Jev misreads direction with bare numeric state.
Try it
npx wrangler secret put TYPESAFE_API_KEY then npx wrangler deploy
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.95
- Shows a System One patternyes0.93
- Handles uncertaintyyes0.62
- Measuredno0.05
- Runnableyes0.87
- Worth recommendingunclear0.52
- Model replicano0.04
- Problem scopescore on a 0–2 scale0.00
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.