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Relive the biggest puzzle craze of the 1980s with Cube 'O'. This online game puts a twist on the classic Rubik's Cube ®. Use the empty space to maneuver pieces so that each side of the cube is a different color. Move one piece at a time. Rotate the cube using the arrows. Prepare to have your brains and patience tested when you play online. You can't break Cube 'O' apart with a hammer if you get stuck!