Sonic 3 Rsdk -

: Unlike original hardware that stretched the image, the RSDK version renders more of the level on the sides for a 16:9 aspect ratio.

The RSDKv5U project is part of a larger, thriving scene dedicated to enhancing Sonic games. While Sonic Origins is a fantastic official release, the RSDK decompilation offers the flexibility, speed, and moddability that the dedicated Sonic community desires. Sonic 3 Rsdk