Reaction time
Wait for green, click fast. Five attempts, average and comparison against the human mean (~250 ms).
gameinputux
How it works#
Time measured with performance.now(). There's an unavoidable input lag bias (~10-30 ms on 60 Hz screens, less on 120/144 Hz). Human mean is around 250 ms; below 200 starts to smell weird.
Click before time = round lost but not deducted. Five attempts per round.