The optical illusions are those mind-bending games that play with shapes and images and point of view. There are kinds of ...

Can you spot the hidden number? This optical illusion features a grid of identical circles with 96 and 69, but one lone circle has the number 99. Optical illusions like this challenge your observation ...

Optical illusions challenge the brain's perception by presenting visually perceived images that differ from reality. This article introduces a puzzle featuring a grid of the number 45, with a ...

Only those with razor-sharp focus can uncover him in under 5 seconds. Why so hard? Optical illusions for kids and adults alike often cleverly camouflage details in plain sight. Brain Teaser IQ ...

Located at the top of the heavily (tourist) trafficked Royal Mile, Camera Obscura is filled with enough colorful puzzles, games and optical illusions to keep the kids (and adults) entertained for ...