The "(World)" tag indicates the ROM is region-free or includes multi-region support, meaning it will run on PAL, NTSC-U, or NTSC-J emulator settings.
The file "" typically contains a single ROM file for the original 1992 Mortal Kombat game, usually formatted for the Sega Genesis/Mega Drive or Game Boy . Included Files Mortal Kombat (World).zip
This ROM allows you to play the first entry in the franchise, which features: The "(World)" tag indicates the ROM is region-free