Unknown

ManiAC Shuffle 3
Maze Burr
Mebina
Mechanism Box
Melted Checker
Merlin
Mini Solitaire
Minima Sally and Smiley
N-Closed
Napack
New S Box
New Tiles
Nick L's
Nkryptor
No Full Pirouette
No Holes Barred
Nonagon
Nope Box
NS
Number Blocks
Nut Stack