To run Sonic 3 A.I.R. , you are to provide the original game data. The program specifically looks for a file named Sonic_Knuckles_wSonic3.bin in its data folder. It does not distribute any copyrighted Sega code itself, making it a legal, "bring-your-own-ROM" project.
Unlike the standard Sega Genesis console version, this file contains a rare, time-attack oriented version of the game specifically engineered for arcade cabinets. sonic knuckles wsonic3bin file