I would also go for Fallout 1. Love the story and gameplay structure!

4 enjoy the building

Fallout 1. Because it's the only one I've ever finished and one of the few I've started.
However, I've never owned and played New Vegas and since everybody is raving about it...

For those only owning the main game but none of the DLCs, would you mind them only entering for all of the DLCs?

damn, i wish to see the 1.0 version of this mod https://www.nexusmods.com/fallout4/mods/55215

Fallout 1 was a classic but Aroyo had something about it as well =)

.. and I also vaguely remember F3's start - when you are a child inside the Vault, that was really cool tutorial as well, probably one of the best tutorials I ever played.

Fallout 2. I've lived there smth like half a year

Thank you for the opportunity! :)

thanks bro!!