The evil Dr. Robotnik is trying to collect the Chaos Emeralds, and the only thing that can stop him is Sonic the Hedgehog. Search 14 levels for power-ups, shortcuts, and entrances to hidden stages. Sonic now has a Blast Attack that will help him defeat Robotnik’s minions. Environmental effects, like rain and fog, add new gameplay elements. Save the Flickies and collect the Chaos Emeralds before Robotnik does in SONIC 3D BLAST.