Ultimate Mortal Kombat review at Gamespot.

"Fighting on the Nintendo DS goes online courtesy of Ultimate Mortal Kombat, a two-game compilation that contains a quality port of Ultimate Mortal Kombat 3 and a version of Puzzle Kombat, the MK-themed puzzle game that Midway inserted as an extra in Mortal Kombat: Deception. By itself, as a single-player game, it's a bit of a dud. But if you're a fighting aficionado with a DS and wireless access to the Internet, this is a pretty cool package."

Full Source: Gamespot