All three are not playable normally
They dont have arcade endings...
Or skins (Sektor has one slight color swap in story), gear, fatal blows, krushing blows, fatalities, brutalities, taunts, variable movesets, intro VA, Intri animations, outro animations, etc. They dont event have a new moveset. It seems to be just triborg from mkx slightly upres-ed. They definately aren't balanced for actual fights
There is a PC mod that makes them playable without making any of the above suddenly appear. They're still super, super incomplete
So idk what happens if you use the mod to run through the tower but it absolutely isn't anything unique or interesting. Black screen sounds decently likely. Best case scenario, they might have had to replace a character to get the game to accept it so it might just play that characters usual ending. Otherwise I would understand if it just crashed the game looking for a file that doesnt exist
I feel like I've addressed this issue top to bottom. We good or did I cover it all?