It's not a computer game. It's a card game. And you should be playing it, 'cos it's awesome.
http://www.fantasyflightgames.com/edge_ ... ard%20Game
While it has a CCG-like model with deckbuilding and the like, it's great out of the box. And there are no boosters to buy because there's no random card distribution - you know what you get, each card set is fixed.
If you like/liked Magic but aren't playing because it's too expensive (or are playing) then you will love this game.