An optical illusion IQ tests are intriguing challenges that test your brain's ability to focus and identify patterns quickly.

Why do so many people draw the Transamerica Pyramid wrong? As it turns out, the building plays a surprising trick on your brain.

An optical illusion hides a hidden image which just 1% of people will be able to see. The remaining 99% were left stumped by this tricky hidden image which left those who tried to solve it ...

THIS is the brainteaser that challenges you to put on your sea legs and find the hidden envelope on the ship. Everyone can spot the poor souls tied to the mast of the boat, but only those with ...

Indeed, brainteasers are a great way of keeping your mind sharp, but they can often trick us. Certain optical illusions can ...

PUZZLE solvers have been challenged to crack this unique optical illusion that has baffled the minds of many. Only those with ...

These mind-bending optical illusion pictures with hidden images often hide objects in plain sight, testing your ability to observe minute details quickly. In fact, your ability to solve these ...

These challenges urge readers to figure out codes, find hidden objects or blunders, or notice defects in an image. Solving these difficult puzzles on a regular basis improves attention and ...

A mind-bending optical illusion challenges viewers to pick out all of the hidden tigers lurking within a jungle scene. The viral image contains 16 tigers in total, but on first glance only four ...

The cartoon, featuring an elephant hunter and his elusive prey hiding in plain sight, is a mind-bending illusion shared by ... percent of people can find the hidden elephant in this image.

An optical illusion IQ test online can quickly gauge how well your brain decodes visual clues under pressure, revealing ...