Master Little ChopThis is an edge turning hexahedron. If the cuts were deeper the puzzle would become equivalent to the Little Chop.
Master Rex CubeA corner turning hexahedron with 7 types of pieces. All cuts still intersect at the corners.
Master SkewbAn incredible creation by Katsuhiko Okamoto. A very rare puzzle for many years it became mass produced in 2011.
Master Skewb 3x3x3A hybrid puzzle of a face turning and corner turning hexahedra. In this case the cutting depth of a 3x3x3 and a Master Skewb are combined.
Master Skewb CubeIt looks like a Master Skewb and turns around its corners but with different cut depths.
Mayan CubeA 3x3x3 which implements a new way of bandaging. It makes use of many beautiful L-shaped pieces.
Menger VoidThe 2nd iteration fo the Menger Sponge turned into a puzzle.
Mercedes CubeA 3x3x3 with unusually cut circles which can be turned independently.
Mercedes Cube IIIt looks very similar to the Mercedes Cube I but this combines cornerturns with turns of the circles.
Mess Cube 4An Eastsheen 4x4x4 modified to look like a 5x5x5 it internally is. The internal bandaging was removed and replaced by an external one.
Meta IvyAn Ivy Cube with a custom impressionistic design.