You can go to Dickerson Tabneracle Chapel and there will be a guy with a Sniper Rifle. His name is Drifter. Kill him. (You will not lose any karma for this, he will already be hostile.) On him there will be a map to Oasis.
find a place called oasis and there you will find a bunch of green trees and a quest
There are no Mounts in the unmodified version of Fallout 3.
It all really looks the same besides Anchorage, Point Lookout, and Oasis.
There is no more a master key in Fallout 3.
You can find President Eden in Fallout 3 at Raven Rock, but he is also a computer!
go to games for windows find the fallout 3 dlc buy it and you will have it
you can not find any energy cells in Fallout 3 after you find the ones with the alien blaster, you are limited to that number
No, you can only craft, find or buy the dart gun in Fallout 3.
You would need to have the PC version of Fallout 3 and download a mod.
fallout3nexus.com
find who
go to clifftop shacks of if you don't know where it is go to vault 92 then go west to a gorge then search for trees and its there