Sega Sonic DX - PC The Chaos Emeralds are being collected by that evil scientist Dr. Eggman, to feed a mysterious, powerful creature that will give him power. Sonic and his friends are the only ones with the speed, courage and skills needed to end this threat! Choose from 6 playable characters and go all-out in 30 massive levels New Mission Mode gives you thrilling high-speed action as you run and jump in gorgeous, original game worlds Round up and interact with the little creatures in the Chao Gardens to open up new levels & challenges Also features 12 fantastic, unlockable Sonic Game Gear games