How to play
- Press START to begin.
- The timer disappears after three seconds.
- Press STOP when you think exactly ten seconds have passed.
When the game button has focus, Space or Enter uses its normal button behavior. Pressing Space while reading the page does not start a round.
Daily and Practice
Your first completed Daily becomes the official result for your local calendar day. After that, you can play Practice as often as you like.
If the tab becomes hidden during an attempt, that attempt is interrupted and is not recorded.
Where records are stored
Your Daily result, streak, and Personal Best are saved in this browser. They do not transfer to another browser or device and are lost if you clear this browser’s stored site data.
Frequently asked questions
Can I replay today’s Daily?
Not after a completed Daily. If the attempt was interrupted by leaving the tab, you may try the Daily again.
Are results sent to a server?
No. Records stay in this browser; there is no server submission or global leaderboard.
Which time zone defines a day?
The game uses your device’s local calendar date. A new Daily becomes available after local midnight.