Why I Think Stage Fatalities Were Removed From Mortal Kombat X!
Mortal Kombat X is yet another game without the stage fatalities. In Mortal Kombat: Deadly Alliance, we had none of the at all and all characters only had one fatality. In Mortal Kombat: Deception and Mortal Kombat: Armageddon, we had death traps which was like the "Ring Out" function in Virtua Fighter, albeit bloodier. In Mortal Kombat vs. DC Universe, again no stage fatalities so maybe, it's not all to surprising that stage fatalities were omitted from Mortal Kombat X and I do have my possible assumptions.
Mortal Kombat X introduced the Brutalities which was a radical departure from the UMK3/MK Trilogy version which required a long button press. While carrying the name, Brutalities is when an enhanced version of your special moves kills your opponent whose life bar is flashing except, there are several conditions that must be met before it can be done. For example, Dualist Liu Kang's massive fireball must require TEN solar flare shots at the opponent then the 11th be the enhanced move. Which for me is, I wished it were a Killer Instinct type Ultra Combo instead which sent the opponent to a bloody pulp. Characters have more than one brutality so it's a memory eater.
The addition of the Faction Kill (which I think needs online to do so) is really another memory eater. I mean, the Faction Wars mode is already on, the Faction Kills are another. You might think it's a good reason that Stage Fatalities were removed. I guess Ed Boon wanted to add stage fatalities but, the game really ran out of space.
Another is the inclusion of several new modes such as Endless Tower (similar to Tekken's ghost battle), Living Towers (requires online connection) and the new type of Challenge Tower. Again, it eats lots of space so I guess Stage Fatalities could no longer be included.