A simple reaction puzzle: a grid of identical shapes, except one. Find it and tap it before the timer ends.
Each odd shape differs in a single detail: size, shade, inner marks, rotation, mirroring, outline thickness or color. Find it and the next board appears right away. A wrong tap costs you a few seconds.
How it works
• Each level is a run of several boards played against one timer.
• Grids grow from 3×3 to 8×8 as you progress.
• Later levels add extra pressure: a heartbeat in the last seconds, shapes that spin, reshuffle or drift, and boards with two odd shapes.
• Earn up to 3 stars per level based on time left and mistakes.
Modes
• Levels: unlock them one by one and replay any level to improve your stars and best time.
• Daily Challenge: one new run each day, the same boards for every player. Keep your daily streak going.
• Free Play: choose your own grid size and time limit, just for practice.
Also included
• Color-blind safe mode, which removes color-only differences.
• English, Arabic and French.
• Sound, music and vibration can each be turned off.
• No account or sign-in needed.