Reaction Test
Controls
About this game
Reaction Test is the simplest game on lithappy and somehow one of the most addictive. Tap the stage to start a round; the screen turns warm orange and tells you to wait. Some time between one and five seconds later, with no warning at all, it flips to green - and your job is to tap as fast as humanly possible. We measure the gap in milliseconds. Tap before the green appears and the round resets with a friendly 'Too soon!' - no cheating your reflexes. Tap after, and you get a rating: anything under 200 milliseconds counts as Lightning, 200-260 is Excellent, and so on down to the affectionate Snail rating. Your personal best is saved between sessions and shown above the stage, so each round is a tiny duel with your past self. Studies put average human reaction time around 250 ms, so getting under 200 is genuinely sharp - have fun chasing it.
Tips & tricks
- Focus on the centre of the stage; peripheral vision picks up colour changes faster than reading the text.
- Sit relaxed but with your finger hovering close - tension actually slows you down.
- Don't anticipate. The wait window is random between one and five seconds, so trying to time it is a quick path to Too Soon!
- If you keep jumping the gun, take a five-second breath and start fresh - the urge fades quickly.
- Stack the deck: a wired mouse beats a touchpad, and a freshly-paired Bluetooth peripheral can add 30-80ms of input lag.
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