Stare at the dot, moving forward and backwards.

B Both images have perfect circles in them

This image has two perfect circles

What’s inside and what’s outside?

Impossible shapes A five legephant

These pictures have parallel lines

The purple squares are not crooked

Disappearing dots

How many yellow dots do you see?

Color movement

The 3 flowing rivers

Need new glasses?

Disappearing colors Stare at the center dots to see stuff disappear

Contrast illusions Stare at the center of the following images for at least 30s and then look at a white wall or a sheet of paper.

Upside down images

Hill or crater?

Impossible pictures

Same size illusions

Drawings

Cool images

Animated gifs (powerpoint only)

Which way are the ferris wheels turning?

Stare at the center and the purple dots will disappear

Cover you left eye and stare at the left dot to see your blindspot