Optical illusions are cool because they hurt your brain but in a fun way. Unlike when my older brother used me to practice his Tombstone Piledriver after watching the WWE Survivor Series — that hurts ...

Optical illusion challenge questions have emerged as the most sought-after challenge on the web. These astounding photographs ...

Optical illusions have fascinated and perplexed us for centuries. These captivating images challenge our perception and ...

A new optical illusion asks participants to share whether they first see the head of a tiger or a hanging monkey in the image ...

Have you ever looked at a picture for a couple of seconds, only to discover there's more to it than you see? Optical ...

Our optical illusion personality test reveals hidden traits based on the alien planet that fascinates you most. Your choice ...

Think you have sharp eyes? Here’s a fun challenge for you! Hidden among a sea of number 5s is a sneaky little number 3—can you spot it? This optical illusion is a real test of your observation skills.

According to current theories of expertise, this shouldn’t happen. Becoming an expert in chess, for example, makes you better at chess but not anything else. But our findings suggest that becoming an ...

A MIND-BOGGLING optical illusion has gone viral with many failing to spot the hidden number. The creators of the puzzle say ...

This fun optical illusion tests your ability to focus! The cluster of related numbers conceals a number. Within 5 seconds, ...

Medical imaging experts are adept at solving common optical illusions, according to research from four UK universities, ...

This fun optical illusion tests your ability to focus! The cluster of related words conceals a word. The clock is ticking.