Quick challenges · Observation
Odd One Out
Spot the different symbol as the grid gets bigger.
How to play Odd One Out
- Each board has one symbol with a different shape or outline.
- Tap it to advance through ten puzzles. Correct answers add one point; wrong taps subtract one without going below zero.
- There is no timer. Take your time to compare the symbols.
Play using the controls above. New game starts a fresh round. Best scores are saved on this device when browser storage is available.