Farmland GearA puzzle with intersecting circles. Compared with similar circles this puzzle has additional gears inside the big square-like pieces. Privately produced in small quantity in four variants.
Flip-SideTen tiles, one rotatable plane and two additional plungers.
Four by four Alternative versions of Tsukuda square with a several animals instead of coloured or numbered pieces.
GeraniumFive intersecting circles cut with fivefold symmetry imposing unprecedented theoretical challenges.
Gerdig UFOSpin the top/bottom half to mix the satellites, then use the central plunger to flip one, two, three or four satellites over.
Gizmo GearsA puzzle with two intersecting circles and bandaged pieces. Produced in low quantity in four different variants.
GretaVexA sticker variant of the Gripple. Made to make the puzzle more difficult.