HOW TO PLAY
1
Allow camera access. Your webcam is used on-device only — no video leaves your browser.
2
Show both open hands to the camera to auto-start the 3-2-1 countdown.
3
Cross your hands up and down as fast as you can — one up, one down, then swap.
4
You get 10 seconds. Score as many 6-7s as possible. Sign in to save and climb the leaderboard.
NORMAL — a full 6-7 (up → down → up) counts as 1 point. The real test.
EASY — every single crossing counts. More forgiving, higher scores.