This Fallout 3 Guide is pretty much completed, and covers most quests, but who knows when it can ever hit 100%, as I do all of this on my own and Fallout 3 is a massive game. I've started a Guide to Fallout 4, with a mobile friendly design, and promise to cover it much more extensively this time around. Carl's Fallout 3 Strategy Guide Main Quest Walkthrough, Weapons, Skills, and Tips
