There are gear cubes and balls. There is also 4 by 4 gear cubes and so on. Press HERE for some pictures.

This cube is weird, because when you do a move 4 times on a regular cube, it returns to solved position. When you do a R4 move on this cube, it isn't solved. When you do a move, the outer 2 colored outer edges are twisted (like the orange red and green red in the picture). Also, when you do an R2 move, the corners come back to where they were, but the centers don't. One more thing, when you do an R4 and an R'4 the result is different.

You solve the gear ball using 5 steps. The first is to put all the corners in the right spot, the second is to put the centers in the right spot, the third is to put the outer edge gears in the right spot, the next is to put the edges in the correct spot, and last is to twist the outer edge gears. For a video on how to do this, not by me, go: HERE