Traditionally, the most reliable way to obtain this file was through the bundle on Steam. Although the individual game has been delisted following the release of Sonic Origins , owners of the original collection can still locate it:
The file is the essential ROM core required to run the popular fan-made source port, Sonic 3 A.I.R. (Angel Island Revisited) . This file contains the combined data for Sonic the Hedgehog 3 and Sonic & Knuckles , mimicking the original Sega Genesis "Lock-On" technology in a single digital format. Where to Find the File sonicknuckleswsonic3bin file work
Select > Installed Files (or Local Files ) > Browse . Navigate to the uncompressed ROMs sub-folder. Locate the file named Sonic_Knuckles_wSonic3.bin . How to Use it with Sonic 3 A.I.R. Traditionally, the most reliable way to obtain this
