It seems it is not related to the UK English word Fortnight meaning 14 days.
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It isn't. Video games are famous for butchering the language to no good purpose. The "fort" part is because you build forts in the game.
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It isn't. Video games are famous for butchering the language to no good purpose. The "fort" part is because you build forts in the game. The "nite" part is just there because some geek thought it sounded cool. Or maybe they wanted to call it "Fortknight", but that didn't scan well, and Epic Games had some legal trouble with Silicon Knights a while back, so they subbed in the nonsensical "nite"