Fallout: Nevada
Fallout Nevada (Expansion version) is an amateur unofficial prequel to the Fallout game. This is not an assembly of other people's ideas or mods, not an addition to the original story or a renamed clone of the original. This is a full-fledged conversion that borrows the standard content and engine of the original, while the rest of the resource (scripts, plot, dialogues, characters, locations, etc.) was created from scratch specifically for the project.
Explore game