Reciprocating manipulable ball puzzle
Recreational didactic multicombinable device
Regular polyhedron puzzles
Regular polyhedron-based logical puzzles
Resettable puzzle
Rotary puzzle device
Rotatable connected object
Rotatable manipulable puzzle
Rotatable puzzle with octahedral base and connected tetrahedral
Rotating amusement device
Rotating spheres puzzle
Rotational cubic puzzle
Rotational ring puzzle
Row-forming marble board game