"Whatever you do don't do fall asleep"---I think another correct answer should be "Invasion of the Body Snatchers"! Though could maybe be stuck in the sci-fi category only, but is as much a "horror" film as some of the others.
A few of those I got based on the quotes' content, not so much because I remembered them from the films themselves. So, Invasion of the Body Snatcher was my first choice too.
I disagree with allowing the singular type-in for the "game over man" quote. That's an entirely different movie which is probably worthier of inclusion in this list, since it adheres much better to the horror genre than the sequel, but is unfortunately much less quotable. The sequel is really an action/war movie with horror elements.
They're not the kind of mindless slasher movies that people crave on Halloween, but what else would you call them? They're not really dramas. They're not really thrillers. Certainly not comedies or action movies. They're movies in which psycho killers stalk the hero, who must use his or her wits to escape (or...fail to do so, and get hacked to death in the shower). That sounds like horror. Silence of the Lambs doesn't quite fit the bill. I could see calling that a drama, but Misery and Psycho are much closer to horror than they are to anything else.
No “You’ll float too!” (IT)? No “You see, Jason was my son, and today is his birthday.” (Friday the 13th)? No “You have a lot of spirits in here but there's one that I'm most worried about, because it is so hateful.” (The Conjuring)? No “They look exactly like us. They think like us. They know where we are. We need to move and keep moving. They won't stop until they kill us… or we kill them.” (Us)? No “Sheriff, death has come to your little town.” (Halloween)? No “ He, he, he, he, he. Come on Franklin...it's gonna be a fun trip. If I have any more fun today, I don't think I'm gonna be able to take.” (Texas Chainsaw Massacre)
Annie and Paul, Starling and Lector, Bates and his mom.