Diamond ShardAnother face turning associahedron with seven piece types in a different cut pattern.
Dino GhostA Dino Cube put in midturn and twisted chaotically in its solid.
Dino SphereA Dino Star in a different shape with differently coloured pieces.
Dino+Redi cubeA corner turning hexahedron. A hybrid model which combines 4 corners rotating like a Dino cube with 4 corners rotating like a Redi cube.
Diogo CubeA nine-axes turning solid, using a geometry developed by Diogo Sousa.
Diogo-TRDA nine-axes turning solid, using a geometry developed by Diogo Sousa.
DIRT-C1A sphere with 122 axes, 62 of them doctrinaire.
DoDep 1x3x3A 5x5x5 bandaged to be restricted to a puzzle similar to a 1x3x3.
Dolce FloppyAn Ivy Cube reshaped as a cuboid to make four pieces vanish.
Double FiveThe Vertushka reimplemented with a more traditional mechanism.
Double LooperThree circles on one line, each allowing 180° turns with shallow intersections. Plus three additional inner circles almost of the same size as the outer circles.
Dual Diogo's CrystalA nine-corner fourteen-sided turning solid, using a geometry developed by Diogo Sousa.