Watch these amazing optical illusions materialize in front of your very eyes as you color them in! Aimed at compulsive doodlers and colorers, this book contains

Beware, the designs herein may boggle your mind and confound your eyes. Does the cube go in or out, is the line straight or curved? You'll have fun deciding whi

Presents optical illusions and picture puzzles involving the science of color, or the absence of it.

Visual illusions are compelling phenomena that draw attention to the brain's capacity to construct our perceptual world. The Compendium is a collection of over

A rich assortment of visual mind-bogglers, including "impossible objects" — constructions that look fine on paper but can't possibly exist in reality — as w