Sky Chase (Sonic Adventure)


 * This is about the extra stage from Sonic Adventure. You could be looking for Sky Chase Zone from Sonic 2

History
After Dr. Robotnik stole two Chaos Emeralds from Sonic and Tails after they fought Knuckles, he used the Emeralds on Chaos who became Chaos 4. After Chaos was defeated, Robotnik escapes to the Egg Carrier and Sonic and Tails give chase in the Tornado. The point of Sky Chase is to survive the onslaught of enemies and gain as many points as possibily. After getting to the front of the Egg Carrier, a huge cannon comes out and fires a shot, tearing a wing of the Tornado, Sonic and Tails are seperated and Tails makes the Tornado II. After Sonic finishes the Red Mountain stage, he sees Tails in the new Tornado and they give chase again. Sky Chase II is much like the first, but greater difficulty and a darker backdrop. When Sonic and Tails reach the back, Tails reveals that the Tornado II can transform into attack mode. The Tornado II is faster and stronger which the two use to disable the cannon and lond of the Egg Carrier, unfortunatly, Tails forgot that the Tornado II has no landing gear in that mode and they crash.