Master PuckubeA shape variant of the Super Square-1 inspired by Tony Fishers Puckube.
Master Random AxisThe third 4x4x4 "axised" by the inventor. In this case the axis system was tilted in a random fashion.
Master Windmill CubeA 4x4x4 twisted inside of its solid. It resembles one of Katzuhiko Okamoto's most popular creations.
Math CubeA shape variant to a mini 3x3x3 cube
Maybe CubeLike a modified Babyface Cube. The faces can't be turned but the moves that are possible allow for 45° steps.
Mega Axis Cube 3x3x3A 3x3x3 with three aditional layers of cubies and transformed into an Axis Cube.
Mental BoxA truncated Container or less extended Mental Block.
Mess CuboidA mass produced 3x3x5 twisted into a pattern and afterwards extended.
Metal Ghost CubeThe inventor of the Ghost Cube rebuilts his creation - in metal.
Mezon HelicopterA Helicopter Cube jumbled into the Mezon state and modified back into the shape of a cube.