Fallout canon

Fallout canon refers to elements considered an official part of the Fallout universe. As the Fallout series was developed by multiple development studios (the Fallout development team first, then Black Isle, Microforte, Bethesda Game Studios, and Obsidian Entertainment), the general lack of overlap between development teams has caused numerous inconsistencies to emerge. Compounded by different opinions on certain elements of the setting among the developers (such as Tim Cain and Chris Taylor disagreeing on the origins of ghouls), this necessitates certain assumptions on part of anyone covering the game.

Current canon
Since the acquisition of the Fallout franchise by Bethesda Softworks and their development of Fallout 3, Bethesda defines the canon of the Fallout series. However, Bethesda has refrained from issuing an official statement on what is canon and what is not. The following list is considered to be the most representative of the company's stance on the subject, according to available information.

Non-canon works

 * Except for the above, Fallout Tactics and its tabletop component, Fallout: Warfare, were disregarded by Bethesda Softworks during the development of Fallout 3.
 * Fallout: Brotherhood of Steel is treated as non-canon by Bethesda Softworks.
 * Canceled games, such as Van Buren, Project V13, Fallout Extreme, Fallout Tactics 2 and Fallout: Brotherhood of Steel 2 are non-canon, unless aspects of these games are confirmed by other canon sources.