Open mapped? :o Fallout is one of the most open-worlded games I've played lol.
Fallout: New Vegas (4) was on sale on Steam the other week for about $5. Bought it instantly. Love Fallout.
Did you ever play Skyrim? If you did, what did you make of that? It's a very similar format to Fallout, but I think I got more involved in Skyrim, if that makes sense...
I think Fallout 3 is maybe the best one of them all so far, mainly for the story line...but that might just be me. Fallout: New Vegas definitely has a lot of cool new features, but I think I prefer Fallout 3 mainly for the fact that I played it before New Vegas lol.