What it is
A local game where up to 2,569 land, flying and marine animals fight one-on-one; the winner stays on until one champion remains. Every fight is decided by Jev. UI in Spanish.
How it uses Jev
Each fight is one Jev Choice between two animal names under land, water or air rules held in state. Speculative fan-out asks the champion against the next K challengers in one request; answers are walked in order and discarded once the champion falls.
Primitives:choice
Technique worth stealing
Speculative fan-out: ask champion vs. next K challengers in one request, discard answers after the champion falls.
Try it
git clone, cp .env.example .env, paste TypeSafe key, python3 app.py
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-centricyes0.97
- Shows a System One patternyes0.94
- Handles uncertaintyno0.04
- Measuredyes0.98
- Runnableunclear0.54
- Worth recommendingunclear0.55
- Model replicano0.03
- Problem scopescore on a 0–2 scale0.00
- About Jevyes0.99
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 21 Sept 2026.