Many works of Akiyoshi Kitaoka. Designs around standard illusions crafted to maximise the illusory effect.
Grand Illusions is an online retailer specializing in various science based phenomena, fun and games, and optical illusions.
Optical Illusions archive. Check out the biggest collection and newest illusions around. Daily updated!
An archive of popular optical illusions.
94 visual phenomena and optical illusions by Michael Bach.
Interactive, live illusion demos, games, gifts, puzzles, and free tours!
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Best for Puzzles © 2013 - best for crosswords, codewords, sudoku & other puzzles, games and trivia