Reaction Test
Wait while it’s red — click the instant it turns green to measure your reaction time.
About the game
Reaction Test is a simple reaction-time benchmark: the screen turns from red to green at a random moment and you click as fast as you can. Typical visual reaction times are around 200–300 ms — how fast are you?
How to play
- Wait while the screen is red, then click as soon as it turns green.
- Each round scores 600 minus your reaction time in ms (min 0).
- Clicking before green is a false start and scores 0.
- 5 rounds; your average reaction time is shown at the end.
Controls
Click or tap anywhere, or press Space / Enter.
Tips for a high score
- Rest your finger on the screen or Space key already.
- Don’t guess — the delay is random.
- Stay relaxed; tension makes you slower.
FAQ
- How do you play Reaction Test?
- Wait while the screen is red, then click as soon as it turns green. Each round scores 600 minus your reaction time in ms (min 0). Clicking before green is a false start and scores 0. 5 rounds; your average reaction time is shown at the end.
- What are the controls?
- Click or tap anywhere, or press Space / Enter.
- Any tips for Reaction Test?
- Rest your finger on the screen or Space key already. Don’t guess — the delay is random. Stay relaxed; tension makes you slower.
- Do I need to download or sign up?
- No. Reaction Test runs in your browser on phone or desktop for free. Your best score is saved locally in your browser.