Sonic 3 Rsdk – Must Watch

You're looking for information on the RSDK (Rotor Software Development Kit) version of Sonic 3!

• Run the engine and play your modified stages.
• Use debug modes (collision boxes, spawn control) if available.

Widescreen Support: Native 16:9 aspect ratio, removing the "black bars" seen in original hardware emulations. Sonic 3 Rsdk

Current Status (2026 Outlook)