If you thought the zombie apocalypse experience inLeft 4 Dead 2was creepy, brace yourself for a whole new level of terror. In the world of custom campaigns, the survivors' nightmares are taken up a notch, with fan-made maps that will have you checking under your bed after hitting “play.”

From haunted mansions to eerie swamps, Left 4 Dead 2’s modding community has unleashed some seriously hair-raising campaigns that will keep you up at night. So, if you’re bored of the official ones, grab your virtual shotgun, stick close to your teammates, and prepare for a heart-pounding journey through the most bone-chilling scenarios you’ve ever encountered in this iconic survival horror game.

Left 4 Dead 2 Buried Deep Campaign

8Buried Deep

Created by Zanieon,Buried Deep’salternative story starts where the official Blood Harvest campaign ends: deep underground in a military complex. Survivors are trying to take a break from the zombie apocalypse, but the Infected crashed the party again, so now the only way out is through never-ending dark corridors.

Be ready for jump scares at every turn, lurking shadows, and eerie sounds that’ll keep you on edge, even if you think you’ve lost your way in those bunker mazes. Besides, this one’s all about the gameplay, so you’ll get seriously slapped around if you can’t handle the horde or skip the teamwork.

Helicopter at the graveyard in Left 4 Dead 2 Dark Wood Extended Campaign

7Dark Wood (Extended)

Dark Wood (Extended)by Phaeton is quite…well, dark. It consists of five terrifying maps that will make you take a long walk through some seriously creepy places in the middle of the night. There’s the dark forest (obviously), some creepy catacombs, and even a church surrounded by a flooded graveyard that will give you flashbacks to horror games likeResident Evil,Dying Light,Doom– you name it.

But the absolute spine-chiller is theSilent Hill-inspired underground prison. This is by far the darkest map of this custom campaign, both literally and figuratively. So, if you plan on surviving some nightmarish zombie waves, better stick close to your squad. The campaign is pure horror, and it’s seriously not for the faint of heart.

Foggy Street in L4D2 Silent Hill Otherside of Life Campaign

6Silent Hill: Other Side Of Life

Speaking of Silent Hill, this campaign is a total nostalgia trip for all the series fans out there. It’s still a classic Left 4 Dead 2 experience, but with extra terror that will put you into a seriously foggy and (for the most part) pitch-black environment.

And, as if the zombie apocalypse isn’t challenging enough,Silent Hill: Other Side Of Lifeby Leafo takes the cake when it comes to length and difficulty. It’s not just long because it eats up your time due to huge maps, but it’s also seriously tough.

Car in the middle of nowhere in Left 4 Dead 2 One 4 Nine Campaign

Dying in the game puts you in an even worse position, and figuring out puzzles can distract you from the enemies, which are even more terrifying than usual thanks to a Silent Hill-inspired skin pack and custom sounds for the Special Infected.

5One 4 Nine

In theOne 4 Ninecampaign made by Kev Edwards, the usual four survivors are fighting through a zombie-infested Nevada Desert in an effort to find what’s supposed to be a super safe military base. But guess what? That so-called ‘safe zone’ turns out to be a bit of a sci-fi nightmare because there are many brain-hungry Infected lurking in a hidden ancient alien tomb.

With its own soundtrack and some seriously detailed maps, this Area 51-inspired campaign feels like it rolled right out ofValve’s development studio. Just a heads-up though, if stumbling upon massive piles of dead bodies gives you the creeps, you might want to reconsider giving this one a shot.

Left 4 Dead 2 Bloody Moorse Campaign

4The Bloody Moors

The Bloody Moorsis another Kev Edwards sinister campaign where survivors are fleeing the USA for refuge in England, only to crash-land on the bleak Yorkshire moors. They’re not in for a cozy welcome, though. They’ll be battling through creepy cottages, grimy canals, spooky cemeteries, and more, all while facing a bunch of undead enemies.

It’s by far the spookiest European-themed custom adventure in the Left 4 Dead series, packed with some tanky werewolves and eerie sounds. And to top it all off, you can expect at least one Witch wandering around those unsettling moors at night.

Creepy moon in Left 4 Dead 2 Haunted Forrest Campaign

3Haunted Forest

Four survivors, one haunted mansion in the woods, and… Ghosts? That’s right, in Dr. Boo’sHaunted Forestit’s not just the zombies that’ll make your heart race. Set in Transylvania, you’ll need to survive the never-ending crowds of Infected and brace yourself for some unexpected jump scares to reach the escape boat.

Thanks to its mysterious haunted house atmosphere, this challenging campaign is perfect for the spooky season. If things get too intense, you can always lighten the mood by enjoying some hilarious graffiti.

Haunted house in Left 4 Dead 2 Asrahmat Custom Campaign

2The Seal Of Asrahmat

Despite being the shortest campaign on this list,The Seal of Asrahmatby Imaculata might give you the most nerve-racking Halloween experience. It’s a one-map challenge packed with loads of unique custom goodies like new items, sounds, and a terrifying new enemy.

Right from the start, you’ll be bothered by an unkillable ghost that’ll chase you down while you’re looking for the Seal of Asrahmat to stop the zombie outbreak. So, get ready to solve puzzles, take on enemies, and light up some Jack-o-lanterns for extra spookiness.

School Bus in Left 4 Dead 2 Back To School Custom Campaign

1Back 2 School

Just when you thought the idea of going to school was scary enough,Back 2 Schoolby envirozavr takes it to a whole new level. It’s like enduring a six-part exam that puts your teamwork, ammo management, and aiming skills to the test – while stuck in a classroom withthe sobbing Witch.

You get the picture. However, you’ll have to survive a bunch of other creepy spots before you even set foot in the school, including the woods, a train station, and a town. The best part about it, though, is that you’ve got two possible endings – escape by helicopter or bus, but only if you persist in the challenging finale.