3X3X3
4X4X4
5X5X5
CUBE (SHAPE PRESERVING)
CUBE (SHAPE CHANGING)
DODECAHEDRON
FOUR
TEN
FOURTEEN
PUCKS
SPHERE
CYLINDER
STAR
HEADS & OBJECTS
MOVING HOLE
MOVING MARBLES
MOVING TILES
SIAMESE & FUSED
FOLDING
ELECTRONIC
PATTERN MATCHING
OTHER MECHANISMS
BOOKS
GAMES
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