Find the different one

Spot the single item that differs in a grid of near-identical ones.

How it works

Scan the grid and click the odd item. Larger grids and subtler differences at higher levels.

• 30 progressive levels, from basic to advanced
• Levels 1 to 3 free, no card

More exercises in Concentration

• Selective attention
• Stroop
• Distraction-free reading
• Comprehension challenge