Free Online Game
Reaction Time Test Button Game
Reaction Time Test Button Game
Wait for green, then hit the button as fast as you can to test reaction speed.
How to Use the Reaction Time Test
Start the round, wait for the visual signal, and press only after the signal changes. Early clicks are false starts. Complete several attempts and compare your typical result rather than relying on one unusually fast score.
Multiplayer Reaction Mode
Both players wait for the same server-timed GO signal. The player with the lower valid reaction time wins. HTB Bot joins after 45 seconds when no real opponent is available.
Improve Measurement Accuracy
- Use the same browser, screen, and input device.
- Close heavy background applications.
- Keep your hand relaxed and ready without guessing.
- Rest between sets when attention drops.
Understanding the Result
The displayed milliseconds include human response and device delay. Screens, mice, touch processing, and system load differ, so compare your own results under similar conditions first.
Frequently Asked Questions
Is this a medical test?
No. It is a browser game for entertainment and general practice, not diagnosis or professional assessment.
Why is mobile different?
Touch screens and mobile browsers process input differently from desktop hardware, which can change measured delay.
Reaction Time Multiplayer
Wait for GO. The lowest reaction time wins. A bot joins if no player is found in 45 seconds.
Finding an opponent...