WitEden 3x3x4 Mixup Plus
WitEden 3x3x3 Mixup Plus cube
The original mass produced mixup cubes from WitEden are still a great quality, challenging series of puzzles.
With lots of bandaged pieces in it's fully scrambled state, this 3x3x4 probably being the most difficult of the non-wormhole variety of this series, and will present a real challenge to even the most seasoned puzzlers. Like all of the mixup cube series, it allows 45 degree turns of the centre slices, followed by regular 90 degree turns of the faces.
This causes the cube to shapeshift, and actually allows the face centres and edges pieces to swap places, something which can never happen on a regular 3x3 puzzle cube.
This presents the player with a whole new puzzling challenge.