Fully functional Siamese 3x3x3Looks like the first handmade modification ever but is a completely new puzzle. A pair of Siamese Cubes which allow to exchange pieces between the halves.
Fused 3x4A Fused 3x3x3 and a Fused 4x4x4 in one puzzle.
Fused 4x4x4This is a fused 4x4x4 made from two Revenge cubes.
Fused 5+7A 5x5x5 and a 7x7x7 fused into the same puzzle.
Fused 6x6x6Two 6x6x6's fused into one puzzle. They share a common 3x3x3-block.
Fused CubesTwo 3x3x3's fused together to share a block of dimensions 2x2x2.
Fused Keychain CubeA standard Rubik's Cube with a standard Key Chain Rubik's Cube for a corner!