Fallout Extreme is a cancelled squad-based RPG / tactical shooter that was in development by Interplay’s 14 Degrees East division for the original Xbox. The project was in development for several months in 2000, but it didn’t really have a concrete development team and never made it out of concept stage. After Extreme was cancelled, Interplay’s next attempt at making a console version of Fallout was Fallout: Brotherhood of Steel, released for both the Xbox and Playstation 2 in 2004. Fallout: Brotherhood of Steel 2 had the same fate of Extreme and was cancelled in early development.
On Fallout Wikia we can read all that is currently know about Fallout Extreme:
The game could be played in first and third person perspective. The player would control a 4-person team and would be able to switch the active character, all of which had various skills, at any moment. The team could consist of ordinary wastelanders, former Brotherhood of Steel members, super mutants, Native American shamant and even Mongol warriors. There were both single- and multiplayer modes.
Not much is known about the development team. Brian Christian, head of 14 Degrees East was the lead producer, while Todd J. Camasta was the art director, like with Fallout Tactics.
Sadly only few artworks remain from Fallout Extreme, preserved in the gallery below.
Thanks to Robert Seddon and Userdante for the contribution!