Ok You wake up and OMG you are in a game so what game would you want to play through like you are really in it. Everything is the same and if you die you just start from a save point and bullets don't hurt you and stuff just makes health go down. I would go into Fallout 3 just because it seems like it would seem cool and yes in fallout 3 you would still be able to use VATs and it would be more scary when a ghoul pops out. 
