Fallout Extreme was a canceled squad-based tactical shooter set in the Fallout universe. The title was in development for several months by the 14 Degrees East studio within Interplay Entertainment for the Xbox using the Unreal Engine. The title was canceled due to a lack of a proper concept that could have been explored further.
Despite the cancellation, concept art including a logo was eventually found. Interplay's next attempt at bringing the Fallout series to consoles would be with Fallout: Brotherhood of Steel.