"Mortal Kombat 3 Extra 60" likely refers to a hacked version of the original Mortal Kombat 3 video game for the Nintendo Entertainment System (NES). The "Extra 60" may refer to additional content or features added to the game, but without more specific information, it's unclear exactly what those additions might be. It's worth noting that Mortal Kombat 3 was originally released in arcades and on home consoles like the Sega Genesis and Super Nintendo Entertainment System (SNES), but not on the NES.
