The game's textures and audio cannot physically compress below ~15 GB without losing quality so severe that characters look like PS2 models. Be wary of any site promising "MK11 5GB download."
— GeForce Now, Boosteroid, or Xbox Cloud Gaming let you play MK11 without downloading it fully.
Some repacks remove story mode cinematics or multiplayer functionality to achieve their small size.
To prevent the game from trying to phone home to Steam servers (which would trigger a ban or crash):