Mass Effect, but you've got to admit that it was a great read. In fact, the game's copious amounts of text will be spilling into dead-tree form a second time with Del-Rey Books' just announced Mass Effect: Ascension, which will be penned by Mass Effect lead writer Drew Karpyshyn, as was the first prequel book in the game's universe. (A second book had previously been hinted at with the (apparently) temporary subtitle of "Revolution.")
This second novel, Ascension, will span the events between the end of the first game (Spoiler: Rosebud is his space sled!) and the beginning of the second. There's no word on a date yet, but we're going to go out on a limb and guess "sometime before the second game is released."