How to play

Your palm height is the paddle position — raise your hand to move up, lower it to move down. The paddle eases toward your hand, so smooth movements beat frantic waving. First to 5 points wins. Hits near the paddle edge send the ball off at sharper angles; that's how you beat the AI, which tracks the ball at a capped speed.

vs AI — one hand anywhere in frame drives the left paddle.
2 players, 1 camera — a hand in the left half of the frame drives the left paddle, a hand in the right half drives the right one. Works with two people side by side, or solo with both hands.

Privacy

The camera turns on only after you pick a mode, and the light goes off the moment you hit stop camera or leave the page. Frames are processed by a WASM model served from this site — nothing is uploaded, no account, no tracking of any kind on your input. Verify it yourself: open DevTools → Network while playing and watch nothing leave.

Requirements

A webcam and a reasonably recent browser (Chrome, Edge, Firefox, Safari 16+). The tracker prefers your GPU and falls back to CPU. First load fetches ~18 MB of model + WASM once, then it's cached.