Online since 2002. The most comprehensive site for all around twisty puzzles.

Square-1 (3 layers)
Micro Square-1A Square-1 with an edge length of only 12 mm.
Mirror 1x2x3 SplitA mirrored (aka: bumped) version of the Split 1x2x3
Mirror Square-1The concepts of Mirror Blocks and Square combined in one puzzle.

Not-So-Square-1Could also be named "Bump Square-1"
Octagon-1A Square-1 truncated into a regular octagonal prism.
Offset Square-1/2 EqualA Square-1/2 puzzle with a symmetric middle cut and layers offset by 45.

OlidiusA puzzle made in the former Soviet Union. Even in that region a very rare item.
Otter CubeA split bandaged 1x2x3 offset similarly to the zock cube.
Penta-1A Square-1 in shape of pentagonal prism with a tilted axis system.

Perez' Square-1A fishered and restickered version of Square-1.
Plane Bump Square-1A Square-1 "bumped" in one direction. The puzzle's center was moved away from the solids center along one axis.
Puck 2/16Two 16-segmented circles on a 1x1x2.

Pyramid SquareA square pyramid made from a Square-1. At least this announcement made the built worth it.
RB Square-2The concept of the "Marcos Square-1" applied to a Square-2: A Square-2 in midturn transformed back into cubic shape.
RD-1A Square-1 in shape of a rhombic dodecahedron.

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