I don't know if it's the best game ever. It's hard to compare Fallout 3 to some very good first person shooters, action or other RPGs like Mass Effect. But it's definitely on my top ten.
Achievements completion : 99,74%
Gamerscore completion : 99,77%
Retail games completed : 91/93
I'm a completionist!!!
If you send a friend request or game invite, please send a message telling what or why, otherwise I will just ignore it