I have some doudts about the history of FO, FO3 was the first game that i played so i didnt understand some stuff, i hope someone answers them:
How so many fireweapons survived the nuclear bombs?Wouldnt they blow up?
how did the other people that werent on vaults survive?
Where do the Super Mutant Behemoths come from?
Did everyone on the other vaults die?
Why are bottle caps the current money in the game?
Pardon my ignorance...
I'll try my hand at answering these, lol.
(Numbered for ease of reading)
1. Flame based weapons would have been considered heavy armaments, so they would have likely been locked in armories and bunkers when the bombs fell. It's unlikely that many civilians would have had any, and probably even less likely that they would have been standard issue to the peace keeping soldiers in the US. So when the bombs fell, they were all safely locked away, then, they would have been looted years later, by raiders, or whatever.
2. They probably went in standard fallout shelters, or were far enough away from the balst that they werent incinerated. Like someone else said, the real danger to the survivors was the radiation, which is why we have Ghouls. But yeah, people can survive anything, like roaches.
3. Like my previous post said, they may not make much sense to us, but in the context of FO, they do. the FO universe is different form ours in many ways, including the basic physics. It's basically what people of the 50s viewed nuclear war and post apocalypse as, so to them, giant mutants would have been expected, so thats what we got. Personally, I think its likely just radiation mutating them further.
4. Not everyone, remember, Vault 101 is probably the last sealed vault left, and most of the other vaults were social experiments, which seemed to fail more often then not. The Vaults that were designed to open after 10 years, like normal, were the control groups in the experiment. The people in those survived, for the most part. Other vaults, like the ones in the Capital Wasteland, were grand social experiments, the majority of the people in thse died, due to the experiement failing, or getting out of hand.
5. Bottle caps were used, because they were numerous, so there was a steady supply of them, and the technology to make more was destoyed, so the numer of them stays the same, which stops inflation and what have you.
Anyway, hope I helped.