fallout 3 and gears are two completly different games its like comparing runescape and thing thing 4 both are good( i mean gow 2 and fo3 runescape and thing thing 4 r crap)
fall out 3 indefinitely because, gears 2 ends too fast, and in campain there is only the story, even though fall out 3 has no multiplayer, its worth the money, now if you want a multiplayer game where there are nothing but bastard campers and no lifers, then gears 2 is for you
