Reaction Time Test
Difficulty: Easy
How fast do you react to a visual signal?
Start TestHuman Performance Test
Tiles flash in a secret order. Repeat it exactly — one extra step every level.
Personal Best: —
Remembering what lit up is easy; remembering in which order is the hard part, because order has no visual shortcut — it must be rehearsed as a rhythm. That is why the classic Simon game defeats adults at around 8–9 steps. The winning technique is motor rehearsal: tap the rhythm on your leg while watching, converting the visual sequence into a muscle pattern your fingers already half-know before your turn starts. Each level here adds exactly one step, so progress is brutally honest: your score is your rehearsal limit.
FAQ
Tiles flash in an order — for example 2 → 5 → 1. Click them back in the same order. Every cleared round adds one more step.
Each tile lights for about 600 ms with a short gap, slowing slightly as sequences get longer so they stay learnable.
The first wrong tile ends the run. Your score is the longest sequence you fully repeated.
Most adults manage 6–8 steps. Beyond 10 you are using rhythm or grouping strategies, whether you notice it or not.
Tap along lightly (without clicking). Converting the visual order into a movement rhythm roughly doubles most people’s span.
Difficulty: Easy
How fast do you react to a visual signal?
Start TestDifficulty: Medium
Click only the target shape among decoys.
Start TestDifficulty: Easy
Click as fast as you can in 5 seconds.
Start TestDifficulty: Easy
Measure your clicks per second.
Start TestDifficulty: Medium
Check your WPM and accuracy.
Start TestDifficulty: Medium
Hit moving targets for 30 seconds.
Start TestDifficulty: Medium
Remember the highlighted squares.
Start TestDifficulty: Medium
How many digits can you hold?
Start TestDifficulty: Hard
Reproduce the grid pattern.
Start TestDifficulty: Easy
Hammer SPACE as fast as you can.
Start TestDifficulty: Varies
Accuracy, double-click and precision.
Start TestDifficulty: Easy
Are all your keys working?
Start TestDifficulty: Medium
React to a sound, not a sight.
Start TestDifficulty: Hard
Right key for the right color.
Start Test