SEO challenges
How accurate is your sense of time? These challenges hide the clock and ask you to stop at exactly the right moment.
Guess 10 seconds. Or go long and stop at 999 seconds (that is 16 minutes 39 seconds, if your brain insists on converting). Rankings use absolute timing error — closer is better.
Estimate exactly 10 seconds. The clock hides — you stop by feel.
World Record
8.737 sec
Champion · Tommi
0 attempts
Attempt Record →Feel 16 minutes 39 seconds with no visible clock and stop as close as you can.
World Record
NO RECORD YET
Be the first to achieve absolutely nothing.
0 attempts
Attempt Record →