I think I put about 70 hours into Fallout 3... I've gotta head back there sometime, and clear a few more missions off. I gave my sister a copy about a year ago now, and it's still her most played game. I reckon she's put around 200 hours, if not more, into that. Seriously immersive, and after spending a good few weeks with Skyrim, I gotta say, Fallout 3 still kicks the living daylights outa Skyrim.