The Fallout universe is pretty interesting imo. I really like how pre-war America was portrayed, and how it resonated in the wasteland societies after the bombs fell.
I love the fact that fallout is based on physical world locations. I live in Las Vegas and it's amazing to be able to see these locations in this game. It is a wonderful combination of realism and fantasy that actually makes the overall experience that much more worth it. I'm not just talking about the familiar landmarks that everyone knows. There is a particular desert stretch south from the starting area that is flat and barren. I used to drive by that area when I was younger and it really caught my attention. It's not just buildings but the geography as well. I really need to play this game again.
Fallout is my favorite game series in the universe. The lore and the gameplay is just so good. I've read all of Fallout Bible hahaha.