Comes with a fair bit of bugs, but it still worth playing.
Pros
-Great visuals in the singleplayer
-Single player offers a veriety of locations
-Multiplayer adds 6 player support
-Always great voice acting and sound
-Its Splinter cell
Cons
-Lag issues online in some games
-Hard to get online matches going
-HQ missions are different and new, but i didn't enjoy them that much (double agent feature)
Bottom Line - I would even buy this game just for the single player. It is just another splinter cell game, and thats what makes it a good buy.