Can you find the symbol that looks slightly different? Don't be deceived, the concept sounds simple but it descends into madness as the levels get progressively harder.

Key features

• Multiple difficulty levels

• Choose a specific difficulty to play at

• Infinite levels

• Endless gameplay

• Your score is cumulative. Wrong answers subtract.

• Calming music

• Train your eyes and patience

• No time limit

• Simple concept, challenging to play

• Playable in any language because there are no words included

How good are your eyes?

WARNING: It has been reported that this game may trigger epilepsy. If you are sensitive to rapidly moving imagery (as shown in the gif above), this game may cause strain. However for those impacted, it is possible to disable level progression so you never see this type of motion.