* {{Anvilicious}}: From the second game's opening scene, it's shown how the students at Fallcreek only care about two things. Then just in case the player didn't get it, it is then stated outright, through a report in the hospital level, that the infection which consumed everyone on campus was spread due to rampant sex and drug use. To really drive home the point that those are bad things, by the end of the game all the characters that were partying at the beginning [[spoiler:have been killed off, mostly in an arbitrary fashion]].
** [[FridgeBrilliance Just what you'd expect]] [[TheScourgeOfGod from a playable teen horror flick.]]
* CultClassic: The games have developed a very strong cult following in the years following their release.
* EnsembleDarkhorse: Corey and Mei ended up being the most popular new characters introduced in the second game. A Google image search for Mei alone brings up a good deal of fan art of her, and Corey himself has a few. It helps because [[spoiler: Mei suffers a completely unexpected and brutal death at the hands of Kenny and poor Corey commits suicide after being unable to deal with her death by the end of the game]]. Their popularity resulted in a (sadly canceled) spinoff game called ''ObsCure Survivor'', which was supposed to be something of a light gun game and was to explore Corey and Mei's characters and relationship further. ''Game Informer'' even listed Corey and Mei #14 in their list of Video Games' Cutest Couples.
* {{Foreshadowing}}[=/=]FridgeHorror: Hey, remember in the "nightmare" stage at the beginning of the game, where Mei and Corey encounter [[spoiler:Jun, Sven and Amy's mutilated corpses?]] Take a good look at the manner of wounds that seem to have done them in. [[spoiler:A quarter of Jun's face and entire right arm have been torn out, Sven's missing both his arms and has a gaping hole in the middle of him, and Amy's corpse is lying upon a large flower with her arms streched out and her entrails spilled out of her stomach.]] What does this have to do with anything? [[spoiler: Jun's wounds seem to imply mauling at the hands of an animal, Sven's implies chainsaw injuries, and something seems to have bursted out of Amy's stomach. Mauling at the hands of a monster, a chainsaw, and a monster infant is what kills the three respectedly!]]
* GoddamnedBats: The Flyers in the second game. They're fast, they attack in groups, and they're almost impossible to hit with melee weapons, force you to waste precious ammo to defeat them.
* MoralEventHorizon: [[spoiler:Former hero Kenny, following his mutation,]] takes a flying leap over the horizon following a FaceHeelTurn, starting with [[spoiler:crushing Mei's head under his heel while her boyfriend Corey watches, then abducting his girlfriend Amy to [[IHaveYouNowMyPretty repeatedly rape her]] offscreen]].
* NightmareFuel: The mannequins that appear in the dream sequence of the prologue from the sequel. And [[HellIsThatNoise that sound]] they make when you hit them.
* SpiritualLicensee: The first game is this to ''Film/TheFaculty''. In both works, a [[BreakfastClub group of high school students from across various cliques and social circles]] battle monsters who used to be their classmates (only with less BodyHorror and more [[TheyLookJustLikeEveryoneElse paranoia]] in ''The Faculty''), and it turns out that [[spoiler:the school's administration is a major part of what's happening]].
* TheyChangedItNowItSucks: The 2.5D spinoff brawler ''Obscure D'' was set up to become a full series reboot following acquisition by Focus Interactive. Eventually it was rebranded as its own original title, ''Final Exam'', following fan backlash.
* WhatAnIdiot: You're barely fighting off the spores in your body, even with the help of medication, so why would you deliberately inhale a whole bunch of them, [[spoiler:Kenny?!]]
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