Your sentence:
This game is about the conflicts between a group of people stuck together in a small-ish place, and
how humans are a bigger threat to other humans than any monsters that lurk in the dark.
It reminds me a book I really love: Huis Clos (translated into No Exit (wikipedia link)) by Sartre. Unlike your game, there's no danger outside, but like your game the people "stuck" together are "the Hell for each other".
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That's cool you added scenes examples! While reading, I was saying myself "I need to comment his game-page-presentation to suggest this. But eh, it was already on page 3 !! Your examples are pretty nices to read, and it made me think it could easily become a cool "descended for the queen" game (see "for the drama" here)
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Plus, I really liked:
→ the fact that losers tell the story of winners and winners tell the story of losers, so it's an exchange of points of view.
→ the two sides the players have to imagine like staying-or-leaving :)
Thank you for your inspiring frightening game!