: To play the rare arcade V1.1, collectors often use MAME (Multiple Arcade Machine Emulator). This requires specific ROM files like uj12.l11 and ug12.l11 to be placed within the game's zip folder.
If your query refers to the arcade ROM set, Version 1.1 (Rev 1.1) is actually a very early "pre-production" or "initial release" build. This version is known for being extremely incomplete: Download Mortal Kombat II (V1.1)
Accessing these specific retro revisions typically requires using emulators or finding legitimate digital bundles: : To play the rare arcade V1
: The most notable addition is the attract mode demonstration during the intro, which was missing in V1.0. Download Mortal Kombat II (V1.1)
: This version featured significantly less blood compared to the final retail versions (Rev 2.1 or 3.1).