At least four stages were developed: Jade Gully, Red Sands, Galaxy Fortress, and Crystal Frost. Lead designer Chris Senn said he modeled and textured four main characters and created designs for 50 enemies and an hour of music. Fang the Sniper and Metal Sonic were planned as bosses. The plot described in promotional materials involves a Tiara Boobowski, who was set to become a major character, and her father calling on Sonic to help defend the six magical Rings of Order from Dr. Robotnik.