Halloween is tomorrow, and horror fans everywhere are probably getting ready to replay some of their favorite scary games to celebrate the spooky occasion. We've already listed some of our favorite horror games to play this Halloween, but it turns out some of the weirdest, creepiest, most disturbing video game sequences actually come from games that aren’t even part of the horror genre proper.

Here are some of the scariest moments in non-horror games.

1. The morgue in Batman: Arkham Asylum

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Batman is a dark series to begin with, but I wouldn’t classify the Arkham games as straight-up horror. That said, it was really awesome to see such a classically scary sequence in Batman: Arkham Asylum. It starts pretty tame: as you approach the double doors of the Arkham morgue, swarms of roaches begin to skitter across the dirty linoleum. Once inside, you might be prompted to roll your eyes: the spooky whispers and slamming freezer doors are a little cliche. But then you try to leave.

The room has looped in on itself, leading you back to the same morgue. Bruce’s parents taunt him from bodybags on the table and from the last bag, Scarecrow leaps out, plummeting you into a bizarre stealth sequence set across a hallucinatory obstacle course. One of the most clever and unexpected parts of the game.

2. Ravenholm in Half-Life 2

The seasoned horror game fan won’t find much to fret about when it comes to Ravenholm’s generically spooky atmosphere, this is the place you run into some of Half-Life 2’s most feared enemies. The first Poison Headcrab awaits you here, as does the dreaded Fast Zombie.

While it’s definitely a creepy level, the scare factor kind of fades when you’re running around slinging saw blades at everything with the Gravity Gun, but it would be a shame to leave this iconic level off the list.

3. Grand Theft Auto 5’s ghost lady

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Grand Theft Auto 5 is a massive game brimming with fun easter eggs to find, from the Vinewood Zombie to the elusive Bigfoot, but it’s the Ghost of Mt. Gordo that makes this list for how unexpectedly creepy it is. This lady looks like someone I’d expect to run into in a Fatal Frame game or a Takashi Shimizu film, not hiking up in San Andreas. No thanks!

4. Gone Home’s basement

I know I’m not the only one who went into Gone Home expecting something spooky to happen and even though it never really does, that house wasn’t eerie on accident. Returning to a new home after traveling abroad to find your parents and little sister gone, a letter on the door demanding you don’t look for her, is freaky enough.

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Later, you find a crumpled up note warning you not to look in the attic, newspaper clippings that explain why the kids at school call your sister “The Psycho House Girl,” a ton of hidden rooms in the walls, a jump scare involving a creepy cross, and other clues that, among all the cute romance stuff, start to point to something having gone afoul while you were away.

Getting into the basement is one of the high points of the game’s mounting tension, as it’s classic horror film fashion to have something go down in there. Nothing does, but Gone Home does have a disturbing backstory that the perceptive player will pick up on, and many of the clues that help piece that subplot together are located down in that basement...

5. Max Payne’s drug trip

The gritty male action hero bent on revenge for the loss of his family is nothing new, but the first Max Payne really made us feel that… well, pain. Not only does the first game make you play the fateful day at the very start, when Max’s wife and baby are killed by violent druggies, but it forces the scene on you again much later when Max himself is administered an overdose of the same drug.

His ensuing trip is horrifying, set in a nightmarish funhouse version of his home where the echoes of his wife and child haunt the halls. A nauseatingly zoomed out camera makes Max’s return to that awful night that much more feverish, as does the surreal sequence at the end when he drops into a hellish abyss paved with the blood of his family. Jesus, Max Payne.

Queue depressing piano track.

6. Halo 3’s cavemen

Plenty of games have cool, hidden places and people for the wandering player to find. Sometimes they’re friendly, like Half-Life 2’s singing Vortigaunt tucked away in Water Hazard. Other times, they’re super freaky and unexplainable and seriously what is this:

Yeah. In Halo 3’s Sierra 117 level, you can find a family of cavemen. They’re just sitting there, oddly proportioned and completely immobile. No idle animation, no way to interact… though if you shoot at them, blood does spurt out, so that’s pleasant.

7. Colonel’s freakout in Metal Gear Solid 2

Anyone who played Metal Gear Solid 1, with its infamous Psycho Mantis fight, should’ve been prepared for something like Metal Gear Solid 2’s twist involving the Colonel. But when it did roll around, the Colonel’s nonsensical rambling and glitchy skull face weren’t any less freaky.

8. Fighting Giygas in Earthbound

Earthbound may have been the inspiration behind weird horror games like Yume Nikki and the bizarre RPG Lisa, but it isn’t really a scary game in itself. Despite that, it still manages to have one of the most horrifying bosses of all time in the form of Giygas, an evil cosmic entity that looks like a swirling, screaming face.

The final fight against him is a hellishly psychedelic encounter, with Giygas constantly twisting and warping in the background. Fighting him is useless and eventually, the only thing you can do is pray. A bunch of kids trying to summon the love of the people they’ve helped in the face of evil incarnate is pretty intense. When Giygas is finally defeated, it goes out in an abrasive explosion of red static.

9. The screams of Oolacile in Dark Souls

Dark Souls, among many other things, has masterful sound design. The combination of music, environmental sound effects, the growl of enemies, and other layers of sound are composed with such care that you could probably listen to the ambient track of each area and recognize it immediately. (There’s actually a website just for ambient Dark Souls tracks.)

Another thing Dark Souls is good at is storytelling. It trusts you to piece things together with little exposition: just things you pick up from characters, item descriptions, and the world around you. Few places in Lordran combine this type of storytelling and careful sound design as well as Oolacile Township, where over the heavy wind in the valley you can hear the screams of its residents as the abyss takes over.

Sure, it’s easy to point to New Londo Ruins and say that’s the scariest place in Dark Souls, considering it’s literally inhabited by ghost skeletons, but the subtle horror of the Abyss and the fallen Oolacile is too good to pass up.

10. The Statue of Happiness in Grand Theft Auto 4

Grand Theft Auto’s parody of American culture was never as scathing and dark as it was in Grand Theft Auto 4. Liberty City, the GTA parallel of New York where protagonist Niko Bellic makes his home, is also home to the Statue of Happiness. This Statue of Liberty-inspired monument stands tall and green off the coast, clutching a coffee cup in one hand and a tablet that mocks America’s treatment of immigrants in the other. Besides its maniacally grinning face, there’s nothing really scary about it on the surface.

Go inside, though, and the sight is a little disturbing: suspended within is a huge, anatomically correct human heart, hung up with chains and still beating. Definitely one of the weirder easter eggs in a Grand Theft Auto game. If you get too drunk in The Ballad of Gay Tony and pass out, you can actually wake up in there. Not something I’d want to see with a hangover, or ever.

11. Pokemon’s Lavender Town

The creepy theme song, all the urban legends about child suicide resulting from said creepy theme song, the ghost town vibe, the fan theory about Gary’s dead Raticate… even though only half of what makes Lavender Town scary are verifiable, this place is one of the most undeniably off-putting places in an otherwise pleasant game.

12. Cave sounds in Minecraft

Why. Why, Minecraft? I’m just sitting here, digging for some coal, minding my own business, and you have to play this? I know I’m not the only one who’s played Minecraft into the late hours of the night, until my music playlist has reached its end, leaving me in utter silence down in the darkness of a deep mine.

It’s true that the hiss of a Creeper might cause more alarm for someone carrying a lot of valuable items, but for me, it’s when I’m lost somewhere underground and start hearing these otherworldly sounds in the absence of everything else that I start to freak out.

13. When Ecco the Dolphin’s pod is abducted

Ecco the Dolphin looks like a pleasant game on the surface. You’re a dolphin in a bright, sunny part of the ocean, hanging out with all your friends, enjoying life, doing cool flips, ignoring all the creepy stuff the other dolphins are saying (“Ecco, if we breathe air, why do we live beneath the waves?”) when suddenly – aliens.

Jump too high in the air and a horrible sound freezes you in mid-air, sucking all the surrounding sea life out of the ocean, including your dolphin podmates. (Skip to about 1:00 in the video to see it.) When it’s over, you plummet back down into the eerie dark blue of the ocean, suddenly alone. If you think that’s scary, wait until you see the game’s final boss. Nope.

This list doesn’t include all the weird, scary, or disturbing moments in non-horror games, but these are some of our favorites. There are still classics like Thief’s Shalebridge Cradle and Ocarina of Time’s Bottom of the Well… we could go on and on. Share your personal favorites with us in the comments below!

Chloi Rad is a Staff Writer for IGN. You can follow her on Twitter at @_chloi