Rhombi GemA face turning rhombic dodecahedron with only with jumbling turns.
Rhombic raptor skewbA rhombic dodecahedron with three cuts per axis through 3-fold corners and two cuts per axis through 4-fold corners.
Rhombic SpartacusA hybrid of Pentultimate and Radiolarian 3 in the shape of a Rhombic Dodecahedron
RhombiCeltic PlusThe Edge Turning Rhombic Dodecahedron with an additional type of cuts.
Rhomdo CometThe shape and axis system of the Rhomdo reduced to the simplest possible puzzle.
RODIA shape and sticker variant of a Bump Cube modelled to implement Schrödinger's cat. It can be alive and dead.
Rubik's CaptureA 14x14 grid of coloured squares among which 2-4 players have to find certain patterns.
Rubik's Roll27 coloured dice in a collection of 5 non-solitaire games.