Some Mortal Kombat 1 players have theorised that the game was originally supposed to be Injustice 3 and that it was changed mid-development, but there's more evidence against that theory than there is for it.
One of the most surprising things about Mortal Kombat 1 is how it managed to break the pattern that NetherRealm Studios had set up over the past decade. Ever since 2011, NetherRealm has jumped between two series, Mortal Kombat and Injustice, breaking up the new releases by swapping from one to the other. Then came Mortal Kombat 1, the second game in the series in a row, breaking that cycle for the first time in over a decade.
Related: Every Mortal Kombat 1 Fatality Rated Out Of 10
This change in release pattern caused some fans to believe that Mortal Kombat 1 originally started out as Injustice 3, and changed to a new Mortal Kombat game late in development. Over the past few weeks, that theory has gained some more traction from Mortal Kombat fans, with some point towards the lack of features like a combo-pinning button and a general lack of skins as a sign that development had to switch gears fairly late into development.
As illustrated here by Redditor ForceOfWar, another reason (and arguably the biggest) why some fans think that Mortal Kombat 1 was supposed to be Injustice 3 is its first Kombat Pack. Alongside some Mortal Kombat characters (two of which are represented in the campaign), Mortal Kombat 1's first wave of DLC is adding three superheroes - Omni-Man, Peacemaker, and Homelander, all of which seem like they'd be good picks for a new Injustice game.
Although that's a decent point if you ignore how violent those characters are, there's actually more evidence that goes against the theory than there is for
Read more on thegamer.com