why do people all go "fallout 3, fallout 3" it was crap, to get the full experience out of it you had to, not only, buy the game but then turn around and cough up 50 or so extra bucks to get all the dlc which (probably) adds only 3-4 extra hours of gameplay, hell i dont like it becaue the original campaign only went for 5-6 hours, i finished it in an afternoon...
also, for me, it would have to be the original Neverwinter Nights (which, according to wikipedia, was released in 2002 so it counts) not so great graphics, good gameplay, BRILLIANT WONDERFUL MAGICAL ORGASMIC STORY, and thats why i liked it and its also the reason nwn2 was a big disappointment
runner-up, mass effect series, no i mean both of them