» Mon Nov 09, 2009 5:35 pm
Vault 77 is canon, but is either not located within the boundaries of the Fallout 3 map, or has been destroyed. It wasn't in use for very long - based on the comic, perhaps two years, tops. That means that there's been nearly two centuries for something to happen to it; if it's within the boundaries of the Capital Wasteland, it's either been covered in some sort of landslide, or perhaps it's the location of Rockopolis, though that would put it extremely close to Vault 112.