If you love optical illusion pictures with answers, this challenge is perfect for you. Can you spot the butterfly in this ...

From the mad snap of the sitting women that always has us baffled, a 'second horse' only people with a high IQ can spot, and ...

Optical illusions push your brain to think creatively, and this one is a tough test. Spotting two patients hidden in an image ...

Can You Spot the Hidden Cat in 5 Seconds? Optical illusions with hidden images are a fascinating way to test your IQ, ...

Viewers were mesmerized by the striking scene in the viral clip, with one saying, "That's a view into an alternate reality." ...

Test your detective skills with a challenging optical illusion! Spot the werewolf hidden among three doctors in just 11 ...

Not all minds are wired the same. Some people can instantly recognize hidden details, while others get tricked by illusions.

THIS is the brainteaser that asks you to combine more than one skill – pictures and words – in a punishing game of intellect.

Optical illusions have been fascinating us for ages, challenging our ability to perceive reality and testing our mental ...

Using a computer model of the retina, researchers have been able to trace the cause of the expanding hole illusion ...