Sonic Knuckles Wsonic3.bin File Download - Google _best_ Info

However, I can suggest a few possibilities:

If you own the original Sonic & Knuckles and Sonic 3 cartridges, you are legally entitled to create a backup copy (depending on your local laws). Hardware devices exist that allow you to connect a Sega cartridge to a PC via USB to create your own .bin files. This ensures the files are virus-free and legal. Sonic Knuckles Wsonic3.bin File Download - Google