Fallout 3 is one of the most popular and biggest (content-wise) games on the XBox 360, and has thus become a popular target for hackers to mod. This video will show you how to mod your Fallout 3 saved game from the XBox 360 version using some FREE software. This does not include Modio, the popular for-money save game editor that many hackers use. Here are the files:
Download that stuff, follow these easy instructions, and you should be able to mod your Fallout 3 saves to your heart's content!