Rubik's 4th DimensionMade in the late 1980's. Four special stickers reveal the orientation of their faces.
Rubik's 4x3 CubeThe Rubik's 4x3 Cube® is the incredibly addictive cousin of the Rubik's 5x3 Cube®. From the Duane Cash Cube Collection. The first extended 3x3x4.
Rubik's 5x3 CubeThe Rubik's 5x3 Cube� is 5x3x3 six-sided puzzle that is hand-assembled and solidly constructed. From the Duane Cash Cube Collection.
Rubik's CrystalAnother official Rubik's Cube. It uses tiles in transparent plastic.
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