Arancia MeccanicaA moving bead puzzle with seven colors of beads, and a base that resembles an orange.
Fisher CubeTaking the concept of the Rubik's cube and turning it 45 degrees.
KristallThe Tetraminx produced in Riga during the soviet era.
Kristals-MA tetraminx with russian origin with a special spiky shape.
Kvadratura KrugaA puzzle from the soviet era. Its title means "Squaring the circle"
Okki Gem I (aka Alexanders Gem)A sticker variant of the Okki which transforms the puzzle back into a puzzle equivalent to the 2x2x2. Produced in East Germany but often customly remade.
RotaOne of the versions of the 2x2x2 Swiss puzzle also known as Tonne