Think you’ve got sharp eyes? This animated office illusion hides 10 pens in plain sight! Test your observation skills and then check the reveal image to see if you spotted them all.

The illusion makes clever use of colour theory, demonstrating how our brains perceive colours differently against certain ...

Test your sharp vision with a tricky optical illusion. Find the hidden inverted '68' within a grid of inverted '89s'. You ...

We're captivated by optical illusions of all kinds, whether they're accidental or created intentionally to trick our perception. And if they generate a nerdy debate about colour, all the better. Over ...

Duping a guppy is easier than duping a ring dove — at least when it comes to a classic optical illusion.

Optical illusions occur naturally in different habitats and conditions across the world. Cloud formations can sometimes make it seem like there's an ocean or a UFO in the sky. Whether it is salt flats ...