Oh sure, that's the name, but it's really the Atlasphere. It was the most awesome of the events in the old American Galdiators, which is the only real American Gladiators in my mind. There were toys of the Atlasphere back in the 90's as part of that American Gladiators line but it was pretty expensive and they were kind of unweildy. These are kids meal toys, so they're pretty compact. Here's a picture to give you a sense of scale.
I was secretly hoping these would be awesome, and they're pretty cool, but what turns the dial up to 11 is that the spheres split apart and you can put something in the middle.