How good are you at noticing details that others often overlook? Take this optical illusion test and see if you can ace it under the time limit.

Optical illusions like this one to find a hidden number exploit your visual processing system and brain's ability to make assumptions in the absence of complete information. But if you possess sharp ...

Hidden number and letter optical illusions are some of the most satisfying puzzles because they look unbelievably simple ...

Optical illusions come in all forms, from mind-bending physiological phenomena to confusing cognitive images, but one variety that doesn't get nearly enough love is the humble ambigram. While these ...

At first glance, a uniform array of the number '1' offers little intrigue, but delve deeper and you'll reveal a lone letter ...

It’s like algebra for the eyes. Viral brain teaser enthusiasts are straining their brains trying to decipher this hypnotic optical illusion, which conceals a mystery number. [Warning: Spoilers below] ...

Optical illusion challenge: Only a handful of players have been successful in solving this viral puzzle online. Check it out here. Find '6' among the multiple rows of '8' in this viral optical ...

Optical illusion challenges like this one are designed to test focus, speed, and attention to detail. They look simple at ...

An optical illusion is blowing up on Reddit, with 2,000 people commenting to respond to the question "what number do you see?" What may look like a swirling set of circular lines actually includes a ...

Optical illusions are not only about the complicated “find the odd number” type, or a cluttered animated image. In fact, some ...