How to play Ten seconds

This is a test of your inner clock. Tap Start to begin timing, then tap Stop the instant you think exactly ten seconds have passed. The catch: the timer is hidden the whole time, so you have to feel it. When you stop, the game reveals your time and how many milliseconds you were off. Your closest ever attempt is saved as your best.

Tips

• Do not count out loud too fast, most people rush it
• Find a steady rhythm and trust it
• Try counting one thousand one, one thousand two, and so on
• A few practice runs will calibrate your sense of time

About Ten seconds

How well do you really know ten seconds? It sounds easy until the timer disappears and you are left guessing. Ten seconds is a quick, oddly addictive accuracy challenge that turns a simple idea into a battle with your own brain.

More reflex games

• Math sprint: Solve as many math problems as you can in 30 seconds.
• Snake: A modern take on the classic. Don't bite your tail.
• Aim trainer: Click as many targets as you can in 30 seconds.
• Reaction time: How fast can you click when the screen turns green?
• Whack a mole: Bonk the moles before they pop back into their holes.
• Stroop test: Read the colour, ignore the word. Brain twister in 30 seconds.

Browse the full arcade →