Fallout has the exact same “feel” as the game franchise. The art, costuming, and music nails it.

My question is: what is the overall genre of Fallout? Americana?

Google search always comes back with MMO/FPS but that’s not my question. What is the genre imparted overall?

For instance, BioShock was 100% Art Deco. So, what is Fallout?