A rich assortment of visual mind-bogglers, including "impossible objects" — constructions that look fine on paper but can't possibly exist in reality — as well as pulsating patterns, vanishing spots, pictures that suddenly change into other configurations as you're looking at them, and much more. 60 black-and-white illustrations.

Contains color and black-and-white illustrations of over three hundred optical illusions, each with brief, explanatory text.

Combining the challenge of crossword puzzles, the look of three dimensional rendering, and the fascination of optical illusions! This book is sure to be a crossword experience you have never had before! While most crossword puzzles are kept within the limitations of a traditional cross-box, these crossword puzzles know no such bounds. Not only do words go across and down, they also can go across-up and across-down! Each crossword puzzle is uniquely constructed, having its own special design and intriguing look. With creative themes and wordplay, each puzzle is sure to keep your attention, while challenging your mind as it attempts to adjust to each optical illusion! This is sure to be a unique crossword puzzle experience for all crossword puzzle enthusiasts!

Optical Illusions Game is a new game that resembles the emory game, but with three bonuses: 1. Instead of a set of two the player has to find a set of four. 2. When the set is completed, the player has to puzzle the four cards into one image. 3. Presto: the four cards form an image of an optical illusion to discover and marvel at. The goal of the game is to collect four cards that form one optical illusion. The player who collects the most optical illusions wins the game. The optical illusions in this game were selected by Paul Baars, a world famous author and expert on optical illusions. For this game he has selected a broad range of mindboggling illusions from the famous classical ones to new illusions created by contemporary designers and artists. The Optical Illusions Game consists of 80 cards and 20 illusions as well as a brochure in which the illusions are shown and briefly explained.

A fascinating collection of 270 visual conundrums to test your perception and boost your intelligence.