1) Which of the following, if any, will be featured in Fallout3; Romance, Sex, Homosexuality, Nudity, Prostitution, Slavery, Cannibalism, Children, Child killings, drugs, addictions? And of the things that won't be featured, can you explain why they won't be included in the game?

It touches on most of those. Slavery, children, drugs and addiction more than the others, as those factor for into the setting more. In regards to nudity and child killings, no, it features neither of those, as they don't really add to the flavor of the game (I'll get into children in the next question more). I think if you look at Fallout 1, and the footprint it has with the topics you ask about, Fallout 3 is pretty much the same, in that it features the types of things you mention at about the same rate, no more, no less. Drugs and drug addiction play a larger role perhaps, as it's a key gameplay device. I think the heart of this question is "has the harshness and maturity of the world of Fallout 3 been tempered from the earlier games?" and I can certainly say "No, it hasn't been."

2) Are children and otherwise non essential or non-quest related NPC's vulnerable or invulnerable to accidental or purposeful (deadly) harm? And how about quest essential people? Please elaborate as much as you can, especially on why you choose to do it that way.

You will not be able to be a child killer. There are several reasons for this, some of them are very basic, like we wouldn't be able to sell the game, anywhere to anyone, if the children could be killed. I'm not using that as a scapegoat. We never wanted the game to offer any incentive or desire to be blowing kids away, so from our initial designs, we didn't know how we were going to handle if you shot them, we just knew it was going to be a big no-no, especially with a system like VATS and the graphic fidelity the gore has. Anyway, when attacked, all children flee and any regular NPCs friendly to the children will instantly attack you, so it feels good in the game, in that there is an appropriate response

There are several reasons for this, some of them are very basic, like we wouldn't be able to sell the game, anywhere to anyone, if the children could be killed.

You will not be able to be a child killer. There are several reasons for this, some of them are very basic, like we wouldn't be able to sell the game, anywhere to anyone, if the children could be killed.

It has been a full decade - an eternity in gaming time - since we’ve seen a new game set in the Fallout universe, but Fallout 3’s release is imminent. Many people believe there is no greater RPG franchise... which means expectations are king-sized. Can the latest installment in the story live up to its classic predecessors? The only way to find out was to play it. This is a journal of the people, mutants, skills, abilities, weapons, equipment, and quests we encountered during our day in a post-nuclear role-playing game.

I doubt anyone has ever looked forward to life after nuclear armageddon as much as I have. As a gamer who counts Fallout 1 and 2 among my favorite gaming experiences of all time, this was a singular thrill: For the first time since announcing the resurrection of one of gaming’s best-loved role-playing franchises in 2004, renowned developer Bethesda Softworks handed over the controls of Fallout 3 to someone outside its employ. It was with perilously high expectations that I stepped out of Vault 101, the self-contained bunker located under Washington, D.C. that sheltered 1,000 people from the apocalyptic war of 2077, and into the bleak post-nuclear wasteland of 2271 with nothing but a pistol and a few life-restoring stimpacks to my name. The main quest (which revolves around the mystery of why your father suddenly left the Vault and what he’s up to) was off-limits for anti-spoiler reasons, but absolutely everything else was fair game.

[...]

Bethesda assures me that the time I spent in Fallout 3 is the most anyone outside of the company will get to play until the game’s release. Did this taste live up to expectations? Absolutely - in fact, I’d say Bethesda has outdone itself with the implementation of VATS, which makes the game more tactical and visually amazing. Perhaps even more importantly, the team nailed the look and feel of Fallout, and despite the dramatic shift in gameplay from the original - that was what truly captivated players a decade ago.