Rubik's Tower Puzzle or 2x2x4 Rubik's Cube is an interesting variation of the original Rubik's Cube. Imagine two 2x2 Rubik's Cubes, one on top of the other, rotating around a central axis allowing this puzzle to change shape. That's right - this allows for a particularly fiendish twisty puzzle and makes it very difficult to solve!
8 years and older
