For those who own the Steam version, the original Mega Drive ROM is stored locally on your computer. It is often used by external emulators or source ports because the Steam-provided emulator has been criticized by some users for audio lag or performance issues. Standard File Path
The Steam emulator is basic, but it works. No laggy Unity wrapper (looking at you, Origins launch). If you just want to double-click and play the pure Genesis cart, it loads in two seconds. sonic 3 & knuckles steam rom
Technically, no. You can only buy Sonic Origins , which is a modern port. The original ROM-based version is delisted for new buyers. Is Sonic 3 A.I.R. better than Sonic Origins? For those who own the Steam version, the