ColumnCubes E+EThree 3x3x3's "siamesed" with the help of 2 throughgoing edge-blocks.
Conjoined Fisher cubeTwo Fisher Cubes glued together thereby reimplementing Fused Cubes with internal twists.
Cross Windows CubeEight 3x3x3s connected with twelve bridges each consisting of a single cubie glued to the adjacent corners.
Cube TwisterEight 3x3x3s connected into one massive puzzle with interconnected movement.
Cubes on a DiskTwo 4x4x4 connected with a disk which allows to exchange pieces between the puzzles.
Cubie Chaos 1A small number of Eastsheen 2x2x2s joined and extended to form a 2x4x5 block which poses a new kind of challenge.
Cubie Chaos 2A small number of Eastsheen 2x2x2s joined and extended to form a 3x4x4 block which poses a new kind of challenge.
Cuboids on a TorusFour Cuboids connected together on a torus which allows to exchange the pieces between the puzzles.
Diogen 25A Siamese 6 (1x2x3) with additional cubies.