Free browser game · No account needed
Quick reflex
Measure how quickly you react to a visual signal.
Play this game →How to play
Start the round, wait for the signal and tap when it appears. Tapping early does not produce a valid reaction time.
Example
A result of 250 ms is faster than 400 ms.
Difficulty
The waiting delay varies each round. Reaction time is measured separately from points.
Play a ten-answer training session. You can choose the difficulty in settings.
After the app has loaded, supported browsers can play procedural games offline. Geography games also need their data to have loaded.