Improve your reaction time by playing this game a few minutes every day. The average reaction time for an adult is around 0.2s and 0.3s, see how you compare with our leader board.   How to play Press the play button Tap the colored squares as fast as you can  Repeat step two until you lose   The background changes depending on difficulty Green - Easy Medium - Yellow Hard - Orange   Optimized for phones, tablets and touch-enabled Chromebooks

Enjoy seamless, high-speed gameplay directly in your web browser with smooth and responsive controls.