Ah fair enough. It'd be worth reading up on the general plots of a few of the games to get an idea of the show though, especially fallout 1 (because it's set in the same place as the new show, and the NCR, New California Republic, who were shown...
Yeh I'm seeing alot of people who never played the games who like what they see, which is great. Games are worth a go though, they're brilliant, especially 3 and 4, and New Vegas.