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You need to see it to believe it! Exercise your eyes and imagination with 29 new mind-bending 3D illusions. 2D illustrations will magically morph before your eyes to reveal what is secretly hidden in 3D. The images will not simply appear to be 3D, they will become 3D! Viewing instructions and a solution key are included. The longer you look, the clearer the hidden 3D image will become. The further away you hold the page, the deeper it becomes!