1000 billion BarrelA custom built bigger version of the ten billion with more layers, more columns and more knobs.
American TrapA puzzle very similar to "Entrapment" aka "Magic Marble" but with four columns per layer.
Color Exchange20 pieces on two separate rings and one moveable plunger.
Figure EightA derivate of the Hungarian Rings from the soviet era.
HeartacheA puzzle with sixteen moving marbles. It came out three years before Ernö Rubik invented the cube.
Monroe's MarblesMove the marbles from one column to the next by tilting and turning. Try to get each column a single colour.
OrionSix numbered pieces in two intersecting rings.
Vergo 24-CubeA Little Chop combined with a moving-marbles-puzzle.