10-second estimation challenge
Stop at 10 seconds without seeing the time.
How to use
2–6 people share one device and each take one turn estimating 10 seconds. Elapsed time stays hidden until stopping reveals the result and early or late difference to 0.1 seconds. The same displayed precision determines the absolute-error order, with equal errors tied.
Start in three steps
- Choose 2–6 people, start the game, and pass the same device to each fixed seat in turn.
- After each seat starts, wait by feel while the screen shows no elapsed time, countdown or beat. Stop when 10 seconds feels complete; repeated taps count only once.
- After stopping, review the time and early or late difference, then pass the device to the next seat. When everyone finishes, results are ordered by the displayed 0.1-second absolute error, with equal errors tied.
Storage and limitations
Seats, progress and results stay in page memory, with no sign-in, server upload or persistent storage. Leaving or refreshing clears them, and clearing or replaying requires confirmation. Backgrounding during a turn voids it and asks the same seat to retry. Input and screen updates have latency, so this is not for formal competition or precise timing.
Frequently asked questions
How does the estimation challenge determine ties?
The shown time, early or late difference, and ordering all use the same 0.1-second rounding. Results are ordered by displayed absolute error; equal errors tie, without hidden milliseconds as a tiebreaker.
Does timing continue if I switch apps or tabs?
No. Backgrounding while timing voids that seat's turn without recording a result. The same seat restarts after returning, so background scheduling cannot be mistaken for a valid result.
Can this be used as an official competition timer?
No. Buttons, touch input, browsers and screen updates all add latency, and there is no sign-in, anti-cheat or judging. This is a casual shared-device challenge, not an official or precision timer.