Reaction Time Test

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AI Prompt:

Reaction time test game, screen turns green at random 2-5s interval, tap/click to measure reaction time in ms, best of 5 rounds, average display, Canvas 2D, dark cosmic theme, Web Audio API beep on green, too-early detection, responsive layout, HUD overlay, endless replay.

Test how fast your reflexes are! Wait for green, then tap as quickly as possible.

How to Play

Wait for the red screen to turn green
Tap or click as soon as you see green
Your reaction time is measured in milliseconds
Complete 5 rounds to see your average

Tips

Stay focused and keep your finger ready
Do not tap during the red phase - it resets!
The average human reaction time is ~250ms