3x3x3 Triangular PrismA 3x3x3 truncated on 3 edges and afterwards extended. The result has a shape like the triangular prism.
3x3x5 OctahedronA variation of the 3x3x5 (by that time no mass produced puzzle!) inspired by Trajbers octahedron.
Circle MinxThe fist application of the circle-concept to a megaminx.
Cubic 3x3x5A 3x3x5 in shape of a hexahedron. This allows some moves a true 3x3x5 cuboid would not allow.
Feliks PillowA pillowed 3x3x3 mass produced by Mefferts and dedicated to Feliks Zemdegs.
Ghost CubeA midturn 3x3x3 still in hexahedral shape but with such an awkwardly oriented axis system that every piece is uniquely shape and therefore sticker can be unicolored.
Handlebar CubeA 3x3x3 with three of non adjacent pieces connected by a bar.
Identity CrisisA megaminx-like puzzle transformed into the shape of a rhombic dodecahedron. It uses spherical cuts.
Jing's PyraminxThe Jing's pyraminx was created by Adam Cowen and was produced by Uwe Meffert in 2009. It is a pillowed Halpern-Meier pyramid, based on the skewb mechanism.
Lorente's SphereA spherical Rainbow Cube. The implementation of a decades old sketch.