The evil doctor Robotnik has a new plan to take over the world. He has built a new weapon, the Veg-O-Fortress on Mount Mobius and with it, he is transforming all creatures into robots. Sonic sneaks into the fortress and tries to stop Robotnik.
Use Sonic as a pinball in 4 dangerous levels. Score points, get rings, collect Chaos Emeralds and destroy the boss at the end of each level.
Description from MobyGames