The new characters also receive unique VS. The roster of characters has increased a great deal, including past incarnations of every character to appear up to Trilogy, sans the MK3 version of Noob Saibot, a shadowy Kano. As the name suggests, it is essentially Ultimate Mortal Kombat 3 with characters added from Trilogy and more.
Ultimate Mortal Kombat Trilogy is a popular hack of the Sega Genesis/Megadrive port of Ultimate Mortal Kombat 3 and was created and released in 2007 by Russian hacker, KabalMK.