It's a coin flip.

Tap the yellow button. The disc spins. It lands on red or green. Check or cross. You win or you lose. Fifty-fifty, every time.

Use it to settle stuff. Who buys the round. Who picks the show. Pizza or salad. The good chair.

Tap the top-right corner to put your own face in it — one selfie for WIN, one for FAIL. They show up when you play.

Turn on the camera?
A green dot or red camera icon will glow while the camera is on.