Redi TetraA Redi Cube transformed into a tetrahedron.
Rex TetraA puzzle derived from the Rex Cube but with an additional set of pieces.
Rob's PyraminxA Halpern-Meier-Tetrahedron (aka Jings Pyraminx) without edges.
Rubik's PyramidA version of the Pyramorphix from the owner of the Rubik trademark.
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