Quest, which is an evolution of Avalon. It's a quicker game, because the voting phase has been eliminated. Instead, if the evil team win, the good team have a final chance to find the bad people. If you do play this game, I highly recomment playing with the "Director's Cut" rules. It can take 4-10 players.
Libertalia can go up to 6 players, and it's one of my favourites. I slightly prefer the new Winds of Galecrest version from Stonemaier Games, but any version of this game is fine.
Another game I'm on the lookout for is Feed The Kraken, which seems to be an improved version of Secret Hitler, but with a pirate ship.
Native Americans beamed into space
spoiler
Prey (2006)