FLINCH: You vs. a simulated fly brain

A playable escape duel against a connectome-based fly model, with an interactive normal/silenced circuit replay.

Play FLINCH in your browser

npm install
npm run dev

Open the URL printed by Vite. Space or the Dodge button controls your fly. Two practice attempts lead into four validated collision courses. Inspect circuit opens a quarter-speed replay; silence LC4/LPLC2 outputs, then restore the original baseline. The top-right button enters full-screen presentation mode. Save result downloads local attempt logs. Replay URLs preserve the selected threat, seed and circuit condition.

The existing trace bank is already packaged under public/data/flinch/. npm run pack repackages saved evidence without running Java. No neural recalibration is needed to run the frontend. npm run build creates a static dist/ build. npm test checks geometry, trace validation and null outcomes. node tools/browser-check.mjs and node tools/full-flow-check.mjs use installed Chrome for browser verification while Vite runs.

For an external recording of the real circuit comparison:

npx playwright install ffmpeg
node tools/record-demo.mjs

The video captures normal → silenced → restored simulations. It makes no claim to record a human reaction test. Record your own played duel through a screen recorder if you want human play in the X clip.

Read the backend decision for model provenance and implementation notes for the shipped scope.

FLINCH source code is copyright © 2026 Mahmood Khordoo and released under the MIT License. The bundled neural evidence is derived from the male-cns:v1.0 dataset and remains CC BY 4.0; full attribution and transformations are documented in the backend decision.