Multi-faceted solid geometrical puzzle toy
Multi-player, multi-character cooperative play video game with i
Multi-stable mechanical device employing compacted rods or disks
Multicolored globe adapted to make combinations between colors o
Multifunctional cylindrical sliding block jigsaw puzzle
Multiple maze game
Multiple maze game
Multistable mechanical switching device
Musical puzzle toy
Musical puzzle using sliding tiles
Novelty game cube
Number puzzle
Object transfer toy utilizing gears for component coordination
Octagon cube spacial logical toy
Octave magic cube
Overlapping rotatable disc type puzzle
Playing surface with answers in first field providing answer in
Polyhedral and sperical cubic puzzles
Polyhedral puzzle
Polymorphic twist puzzle