I'll probably revisit this yet again (because I love talking about games, have you noticed?), but this is a little more serious. I don't know how many of you have played the old games. They have a very different narrative feel from Fallout 3, probably largely because they were created by a very different set of developers at a very different time. The narrative arcs of Fallout 1 and 2 are fairly basic. Your home is at risk. You must venture out into a dangerous world to save your home. As is only appropriate to pastiches of 50's pulp themes, the games are in a way very reactive or even reactionary. You're not trying to make the world as a whole a better place, you're just making sure that the people you care about survive, that the current threat passes you by. However, because the game developers were very concerned about giving the player plenty of choices and attendant consequences, the actions you take to save your home have wide ripples. And these are games where character development is possible, even inevitable. You start out as a sheltered person who has never done anything terribly wrong (or right, for that matter). What you end up as is entirely your choice.
This is not to say that Fallout 1 and 2 are clones of each other. After all, Fallout 1 is an elegant, fairly serious (and quite brief) story about the loss of innocence. The NPCs you can recruit are cyphers, purely utilitarian (and of doubtful use late in the game), but the universe you wander is textured and dark. Fallout 2 is . . . frankly insane. Brilliant, but insane. It takes pastiche to giddy and at times very juvenile lengths. The fourth wall is cracked constantly, you get blatant and joke-y callouts to everything from Terminator to Strangelove, and you're guaranteed to run into absurdities like super mutant magicians, radioactive giant geckos, and exploding toilets. The NPCs are much more fleshed out, the dialogue is more extensive, and the game has a much more exploratory narrative -- and is thus much longer. As a story, it makes less sense, but as a game, it is far more replayable, and perhaps even enjoyable.
Fallout 3 is something else entirely.
( But what is it? )