abstract:Fallout Online (previously known under the codenames Project V13 and FOOL) was a massively multiplayer online game (MMO) set in the Fallout universe that was being developed by Masthead Studios and was to be published by Interplay, with members of the Interplay team providing creative control and design. Chris Taylor and Mark O'Green, two of the creators of the original Fallout, were among the developers; Jason Anderson, one of the other makers of Fallout, was involved in the project between 2007 and 2009, but then left the team.