Mortal Kombat: Deadly Alliance was the first Mortal Kombat game in the main series to be released only for home consoles and not in the arcade. It was also the first new Mortal Kombat game in the main series since Mortal Kombat 4 five years previous. The Mortal Kombat series had been put on somewhat of a hiatus do to a string of spinoffs, both in the video game world and outside of it, that failed to live up to expectations. Midway decided to concentrate on “Mortal Kombat 5” and their efforts were well worth it. Deadly Alliance does a good job living up to the Mortal Kombat name though I still prefer the 2D Mortal Kombat games myself.
Deadly Alliance made some significant changes to game play in that each fighter now had their own fighting styles. Previously, every fighter fought pretty much the same except for special moves. However, in Deadly Alliance there were fewer special moves. There were a number of new characters added as well as many that returned from previous games (though notably missing was Liu Kang).
Deadly Alliance was released in 2002 for the PlayStation 2, Xbox, GameCube and Game Boy Advance. To the best of my knowledge there have been no re-releases so you are still stuck with those choices if you want to play this game.