You know those pictures which, if you stare at them in a special way, reveal a simple 3D image? Now you can play tetris that way! Visit this link to play the game.
http://hidden-3d.com/games_stereogram_tetris.php
Be warned though! By playing this game for too long you might encounter problems with your eyes (blurriness, loss of focus, etc)
If you don’t know how to see the special image, try to look cross-eyed.
via: http://www.downloadsquad.com/2009/09/11/stereogram-tetris-magic-eye-time-waster/
