Egg-Go-Round
From Sonic Retro
The Egg-Go-Round (エッグゴーランド) greets you at the end of Sonic Advance 2's Techno Base. Four platforms, two gray and two orange, circle around the Eggmobile. The gray ones show spikes momentarily; the orange ones spin around. After a while Robotnik shoots bullets at you. Your job is to avoid all these traps to hit the Eggmobile. It's harder than it looks.