The gameplay system of Mortal Kombat II is an improved version of that from the original Mortal Kombat. There are several changes in standard moves: a crouching punch was added, low and high kicks have greater differentiation (be they crouching or standing up), roundhouse kicks are made more powerful (knocking an opponent across the screen, like the game's uppercut), and it is easier to perform combos due to reduced recovery times for attacks. Returning characters also gained new special moves, including some to be used in mid-air, and the game plays almost twice as fast as the original.[3][4][5][6]
As with its predecessor, matches are divided into rounds, and the first player to win two rounds by fully depleting their opponent's life bar is the winner; at this point, the losing character will become dazed and the winner is given the opportunity of using a finishing move. Mortal Kombat II lacks the "Test Your Might" bonus games and point system from the first game, in favor of a consecutive win tally where wins are represented by icons.[3]
The game marked the introduction of multiple Fatalities (special moves allowing the victorious character to execute their opponent at the end of a match) as well as additional, non-lethal finishing moves to the franchise: Babalities (turning the opponent into a crying baby), Friendships (a non-malicious interaction, such as dancing or giving a gift to the defeated opponent) and additional stage-specific Fatalities (the victor uppercutting their opponent into an abyss below, spikes in the ceiling, or a pool of acid in the background).[3] Finishing moves cannot be performed either by or against the boss or secret characters.[note 1]
