Egg Pinball

The Egg Gravity is the Cyber Track boss from Sonic Advance 3.

Doctor Eggman and Gemerl are in a machine with a large pipe coming out of the top of it. The characters are on a platform above Eggman, who fires Blue energy balls at the heroes. Sonic and Tails must jump into the balls and turn them an Orange color, and hit them off the walls in such a way that they can hit Eggman. As the battle progresses, Eggman fires the balls much,much, faster. The only tip to be given is to stay clear of the lowered platforms near the walls of the arena- they're traps! After a few seconds of your standing on them, they'll suddenly drop, resulting in an instant death!