Zompony Apocalypse (Left 4 Dead cross-over)

by Peahead

Rating: teen
Tags: Equestria Girls, Tragedy, Horror
Length: 1724

After a disease breaks out, the ponies of Equestria will have to defend themselves in this new found world that they live in, little do they know how bad it's going to get.

When a disease breaks out in Equestria, ponies become into the undead and eventually start mutating, when everything goes south, there is only one place that Twilight knows they can get help, one where a certain person called Sunset Shimmer lives.
This fic is a crossover with Left 4 Dead, just in case you don't read titles. :pinkiehappy:
Takes place after Season 5 and The Friendship Games.

Published 1970-01-01 00:00:00 UTC
Last updated 2016-01-29 22:33:04 UTC

Two Weeks After the First Infection.

"What is that thing?" Rainbow Dash whispered. "And why is it's foreleg so big?"

"I've heard reports of the infected mutating into things worse, this one is so called a Charger, it will charge at somepony at break-neck speeds then pummel them to death." Twilight replied. "I've even heard that they are becoming immune to magic, it's getting worse and there's no sign of it stopping." Twilight walked over to Fluttershy to see how she is holding up. Since the infection broke out, Fluttershy has changed but Twilight just can't to seem to put her hoof on it, she expected her friend to want to try to help the infected but she seems to do the exact opposite and as much help it has been, it has really been starting to worry Twilight that she might be drifting away from her element. Twilight's train of thought was stopped by a hair raising scream. Twilight instantly knew what it was and ran to the window to see the so called "charger" to be slamming a poor pony to the ground.

"We gotta help 'er!" Applejack shouted in a whisper.

"As bad as this may sound girls, unless we kill that thing, it's not going to release her." Twilight whispered back. "There isn't much we can do without weapons and since they're immune to magic..." As soon as Twilight stopped speaking, she looked over to Fluttershy, the look on her face was unreadable. She had expected her yellow friend to look sad or something along those lines, but nothing. Twilight was starting to get really worried about her friends but she doesn't know if her friends have noticed either. "One outbreak and the whole of Equestria wreaks havoc..."

"Hey, Twilight have you heard from any of the Princesses?" Pinkie asked.

"Shhhh!" everypony whispered.

"Pinkie, you'll get us caught- nevermind, too late." Rarity said to Pinkie. Faster than anypony could blink, the infected started pounding on the door, and it isn't going to hold for long. "Sugarcube corner isn't a safe place to be ladies, we better off get to the castle, we've gathered enough food."

"Sure thing Rarity" Twilight nodded. In a flash, the six ponies we're back at Twilight's castle.

"You could of warned us-" Rainbow Dash moaned.

"Girls, you're back!" Starlight sung. "Spike's still asleep."

"Thanks for looking after him Starlight, there are some bad news about the infected, they're mutating." Twilight said. Everypony but Twilight and Starlight walked out, it was getting pretty late and they were all tired.

"What do you mean?" Starlight replied.

"You see, lets refer the infected as common infected, there are other types of infected too. They're called special infected, I can go through them if you like?" Twilight asked.

"I have time." Starlight insisted.

"Okay," Twilight replied picking up a scroll with her magic."Firstly there are these known as Hunters, these are pretty bad, they can jump un-pony-like distances and when they land on you they will shred you up. They'll keep doing this to the point it's so painful you can't feel pain anymore if you catch my drift. Secondly there are these ones called Chargers, these are pretty bad too, they have a massive foreleg which they will run at you with break-neck speeds until it hits something. It will then smash you into the ground repeatably until once again, you're dead."

Starlights face was now a light shade of green and was trying not to throw up. "They seem like a nasty bunch."

"Oh there's more, at least that's what Princess Celestia said. I think she said she'll send me another letter tomorrow about the others." Twilight said.

"Can't wait." Starlight replied. "Anyway I'm off to bed, see you tomorrow."

"You too." Twilight smiled. Starlight smiled back and headed off.

"Spike, take a letter please." Twilight said.

"Of course Twilight." Spike replied getting a quill and a piece of paper.

"Dear Princess Celestia, I am writing to you to ask you about something. I have put a lot of thought into it and I think we should contact Sunset Shimmer and my Canterlot High friends about this matter since they could help. We could use help from them since they don't rely on magic and the infected have grown immune to magic. I'm going to keep this short. From Twilight Sparkle."

"You want me to send it now?" Spike asked.

"Of course Spike." Twilight replied. In a blur of green fire, the letter was gone.

"You really think that it's a good idea to get Sunset to help us?" Spike asked Twilight.

"Considering that she is good without magic, yes." Twilight replied. With that, Spike burped up a letter.

"That was quick." Spike muttered. "Dear Twilight, I think that this could be a good idea, but it's truly up to you, if you think it's what should be done, go ahead. I must stay in Canterlot where it's safe, I can't risk getting infected. From Celestia. P.S You don't need to be so formal Twilight, you're a Princess too after all."

"Well I better get writing to Sunset then." Twilight said quickly and before Spike could answer, she disappeared in a flash.

Dear Sunset Shimmer,

Something awful has happened in Equestria and I won't talk about it too much here but if you could come over I'd appreciate it, you see I need your help. Equestria is in havoc, almost all of the residents in Ponyville are 'gone' and the same is with all of Equestria.

Your Friend, Twilight Sparkle.

Before Twilight could close the book, text appeared on the page to the right saying:

Of course Twilight. I'll be there in a couple of minutes.

Smiling to herself, Twilight closed the book and headed to the kitchen and made herself a sandwich. After she got back to the Throne room, she opened up the portal and stuck her head through. "Sunset, you here?"

"Right here." Sunset shouted over whilst jogging over to the statue.

"Come on in."

Equestria to Earth

"Come on in."

"What's this all about?" Sunset asked.

"Oh, you'll see." Twilight replied.

"So this is your new castle, huh?" Sunset asked as she started walking towards one of the windows.

"It's not exactly new anymore, but yeah." Twilight said whilst following Sunset. "As you can see, there is something going on which has left Equestria in an apocalyptic state." The look on Sunset's face that of horror and shock.

"Can't Celestia do anything? What about the Elements of Harmony?"

"About that, they're immune to magic. That's why I thought I could use your help considering your world doesn't really rely on magic and will have other means of defense."

"Well yeah we do but are you sure about this? I mean like we haven't got a way to cure them. We have these things called guns, now these are very dangerous. They shoot bullets almost if not, double the speed of sound! One shot of these things can be lethal, in fact, one shot is more than likely gonna be lethal if it hits your body."

"If I'm honest, I don't think we can find a cure to this, it will take an awfully long time and we don't have time." Twilight stated with a face of curiosity. She definitely was curious about 'guns'.

"Why not?"

"Well you see, these infected individuals are mutating and becoming stronger, it won't take long for them to make their way over to us."

"So, how do you get infected?"

"Well, if they bite you, it'll infect you and you'll turn within a few hours although the mutated ones seem to want to kill you instead of infect you..." Twilight was worried and she isn't sure if they'll be able to stop this. There was a loud bang on the door and the sound of a Charger screeching to notion that he is sprinting at full speed. "We need to get everypony out of here now!" Twilight shouted to Sunset. "Go back to your world and get ready to block off the portal once everypony gets though."

"Sure thing Twilight." Sunset said with concern. "Please be careful."

Twilight nodded. "Just get ready." Twilight ran to the bedroom everypony was staying in. Twilight went to wake them up but they were all already awake. "Come on girls, it's not safe here. There are infected trying to get in and the door won't hold." With that, everypony got up and followed Twilight to the portal. If somepony would of been banging on this door two weeks ago, everypony would be worried and panicking, but not now. They all knew exactly what was going on and that panicking is the worst thing they can do. Twilight lead through the portal with Applejack at the back. Once they were all through, Sunset went to block the portal with a... coach? She drove it forward but before she blocked it, a tongue emerged through the portal pulling Applejack back through to Equestria before Sunset could block it off.

"Applejack!" Rainbow cried. Everybody but Twilight was now struggling to stand on two legs and Rainbow Dash was on her knees. "Move the... Thing!"

As much as Twilight was going to hate herself, she had to stop Rainbow otherwise they would all be in danger. "Rainbow, no. We can't."

"Why not!" Rainbow cried out. Everybody could see the tears in her eyes.

"Because if we move that whatever it is, we'll all be in danger, Dashie. We will put a whole other world in danger." Pinkie said. All of them were on the verge of crying but they all knew that they couldn't do anything now. Even Rainbow, but she is in denial, just like when Tank had to hibernate.

"Look guys, I know this is hard for you but you can all stay at my place for the night, it's rather late and you're all going to be tired, I'll lead the way but I'm going to come back here so that I can explain to anyone why the coach is here so that nobody moves it." Sunset said

"Thanks Sunset." Twilight hugged her friend.

"No problem, here follow me. I'll go slowly so you guys can get used to walking."

With that, the nine of them headed to Sunset's house.