Mortal Kombat 3 is the same Mortal Kombat 3 story, except with more added characters.
Mortal Kombat Trilogy later overrides the UMK3 story.
New 4 player 2-on-2 kombat.
New 8 player tournament kombat.
"Chain combos", also known as "dial-a-combos", can now be started by using
a jump punch or a hop kick.
Stryker now has a "riot gun" special move added to his arsenal.
A "toned down" Kabal, who lost a few cheap combos.
Improved CPU opponent AI.
Shao Kahn's Lost Treasures are added to when you beat the game.
The character endings are only accompanied by text and your character's
versus screen picture.
An extra "Master" difficulty is added to the "Choose Your Destiny" screen.
"Endurance Matches" return since last being featured in the first Mortal
Kombat. Some matches have you face as many as three opponents in a given round.