Optical illusion challenges keep people engaged in a fun way. These viral puzzles, designed to trick the eyes, force the brain to look twice before spotting the hidden detail. That mix of difficulty ...

If you have never seen an optical illusion, it is an image that makes you see things differently than they actually are. Optical illusions trick your eyes into believing you see something that is not ...

A couple of years ago an optical illusion came along and almost broke our site. Over three million people read an article about the most dizzying illusion ever to grace our screens – the rotating ...