Liber Fanatica is a series of fan-created supplements for Warhammer Fantasy Roleplay, second edition. Each volume contains background and rules articles relating to a specific theme. Rules are also included for converting between the 1st and 2nd editions of WFRP.
Formed by a group of WFRP 2nd edition playtesters in early 2005, Liber Fanatica was created to provide an outlet for some of the ideas that came up during the playtest, but which would not be included in the official game. After the game's release, other authors were invited to contribute, with the supplements remaining collaborative efforts.
All volumes of Liber Fanatica can be downloaded from the weblink found at the bottom of this page