Optical illusions are tricky visuals that make us ... a distorted image is seen. Hiding behind the distortion is a number. Can you spot it in 4 seconds? Check the image carefully.

Optical illusions have long captivated us with their ... creating a sensation of movement or distortion. This happens because the brain's visual processing system is overwhelmed by the repetitive ...

Players could boast about having 20/20 vision if they complete this tricky optical illusion in time. This image shows a pile of plain rocks and rubble. At first glance, it might seem like nothing ...