A reflex game that rewires your brain.

Tap the right shape, color, or letter before the clock runs out. 150 hand-crafted levels. Free. Offline. No account required.

Coming soon to iOS and Android.

Built for people who love a challenge

Four difficulty tiers push your reaction time down to fractions of a second. It's not a puzzle — it's a workout.

15 waves, each with its own rhythm of easy, medium, hard, and extreme. Paced so you never stall — and never coast.

No signup, no tracking of you personally, no waiting on the network. Open the app on a plane and start playing.

Every level, every wave, free. Unobtrusive ads support development — we never paywall content.

1
Read the prompt
The prompt tells you what to tap — a color, a shape, a letter, or all three at once. Easy levels start with just color.
2
Tap before time runs out
You have 2–3 seconds per round. Tap every matching item, skip the decoys. Three wrong taps and the level ends.
3
Beat the wave
Each wave ramps up: new shapes, numbers and letters, colors that shuffle mid-round. Survive 10 levels and the next wave opens.