Bump CheeseA bumped variant of the Cheese-puzzle. A one-layer six segment prism.
C-10A cylindric prism with 4 pieces on each face. Unlike Squar-1 it does not behave bandaged.
C-18A five-layered variant of the C-10 puzzle. This is a cylindric Square-0.5 puzzle. Unlike C-10 it has five layers and does not behave bandaged.
Cake ZA Super Z in shape of a Cylinder
CheeseAnthony Greenhill's 2-layered Cheese created from a UFO mechanism.
Cheesy CrazeA Cheese-like puzzle with two layers in two dimensions.
ClockA sticker variant of a dodecagonal prism with two layers.
Coke CubeA can of coke converted into a 3x3x3 cube.