Mortal Kombat Arcade Edition Enhanced v1.4 is a ROM hack of the Mortal Kombat Arcade Edition, designed to improve upon the original Genesis port. The "Enhanced" moniker suggests modifications to graphics, gameplay, or other aspects of the game.  Version 1.4 implies this is a specific iteration of the hack, with later versions likely containing further refinements or bug fixes.  The base game's development credits still belong to Acclaim Entertainment and Midway Games.

Mortal Kombat Arcade Edition Enhanced v1.4

Mortal Kombat 1 Boss Hack Beta