MinimorphixThis is a shape mod of a 1x2x3 in the form of a tetrahedron.
Mirror PresentA bumped 2x2x2 with a 3d-printed package that can be used only with the second solution.
Mirror Square-1The concepts of Mirror Blocks and Square combined in one puzzle.
Modular Crazy PlanetsAnother crazy 3x3x3 but one which can easily emulate the whole series of eight puzzles.
Monkey-Cat cubeA simple hybrid combining two symmetrical cuts of corner turning hexahedron with three copter cuts.
Monolith of TimeA 2x2x3 with two circles instead of two additional layers. Partially bandaged.