Square-1-IIA two-layer custom modification of the Square-1
Square-1/2A Square-1 bandaged to have identically sized pieces.
Square-2A modified Square-1 where the corners are split into two pieces. A non-bandaged puzzle unlike the original.
Square-3A Square-2 with pieces which were further split up.
Square-3 PlusA Square-1, combining one layer of a Square-1 and one layer of a Square-2.
Square-4The bigger brother of a Square-2 with even more pieces. The Square-4 is unbandaged so that moves are possible every 18°.
Square-equalA Square-1 in which all pieces have equal size. Therefore it does not behave like bandaged puzzle.
Squared Circle-2A Square-1 with a 1x2x2 instead of a 1x1x2 in the middle plus two independently turnable circles.
Stair CubeTwo layers of different windmill cubes combines with the middle layer of a Fisher Cube.