You are looking for the ISO. Do not confuse this with the "Loadless" mod (which tends to crash).
The is still the original Xbox 360 engine running on original hardware or emulation. It keeps the hub worlds, the orchestral score, and the original (albeit flawed) art direction. Think of it as the “definitive vanilla experience” vs. a full remake.
THIS is the Best Sonic 06 Experience (and no, it's not Project 06)
