Mortal Kombat 3 Ulitmate extended Mortal Kombat 3 with additional playable characters, such as Rain, Noob Saibot, Ermac, Classic Sub Zero, and more. It also included more modes, like a two on two match, new special moves and new "dail-a-combo" combos, improved enemy AI, a harder difficulty, more backgrounds and numerous other additions that were system specific