A stage above the clouds that contains swirling fans that blows you around. The stage contains bouncing platforms and narrow pathways that save you from the many bottomless pits that appear frequently throughout the course. The boss is the Egg Saucer which is piloted by Knuckles the Echidna when playing as Sonic for the first time (though it is possible that Knuckles was actually trapped inside, as he does appear to be attempting to smash the glass free with his fists). After beating Knuckles, it was revealed that Eggman tricked the echidna once again and Knuckles swears revenge on the doctor for tricking him and Knuckles is then playable. After beating Knuckles, if Sonic or any other character returns to the stage, the Egg Saucer is piloted by Eggman. The stage resembles Windy Valley in Sonic Adventure.
The map for Sonic Advance 2 shows that this level is located on a floating landmass. This, coupled with Knuckles' appearance in the boss battle implies that this level is set on Angel Island, although it is unconfirmed.
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