I'd have to check, but I think the original Walking Dead comic, the one that the show is based on, predates L4D. But the games predate the show. I wouldn't be surprised if the comic influenced the game, which influenced the TV show.
While the collab between payday and left 4 dead is obviously non-canon it's not too much of a stretch to say that something similar may have actually happened. Just remove the payday gang and replace them with a group of terrorists or other organized thieves.
@@FurroTheWolf no cs terrorists helped payday 2 gang in go bank to explode it cause you can see money trail in bank go in cs:go map and payday 2 was the first to rob it so they ordered em to explode it and hide the evidences
If you consider Payday mission as canon - the first infected became smoker, because: first - he got some strange bubbles on his body, just like smoker has 2nd - later he will be coughing just like smoker.
Thats just a reference also you see bill in the game so he must have left before the bombing to go to a different hospital because he was at a hospital during the outbreak
The wicth wasn't on there because they died trying to examine her that's what I think (WARNING IM ABOUT TO SAY SOMETHING CRINGY) But that's just a theory a GAME THEORY
It’s weird to see such an old TH-cam series (especially for Valvetimes FIRST series!) with high quality audio; perfect clip selection, easily understood; a script that is well written, greatly performed, AND presented for both veterans of the Valve franchise and people who have never played!
I think all valve games are in the same lore. CS and L4D are the real world, but TF2, HL and portal are like media. This is proven by TF2 figurines in L4D comics and a portal song in CS GO. TF2 and portal are connected with a spy sapper from aperture and half life fits in as it goes along side portal.
This also makes me wonder: -Was the outbreak accidental? -Did CEDA (or someone/something else) plan to use this as a weapon? -What caused the outbreak? I like to believe that the Green Flu was an experiement (unknown reason). In PAYDAY the outbreak starts when they get the blood samples and bring them to whoever bought them. The person who bought them tried to make this a weapon or just infect people. This caused the outbreak. Also if you really want to connect the games you could think that this was to end the terrorists wars (in CS GO). Maybe by creating a weapon that the terrorists used without knowing the results of it.
I always assumed Witches were people who were going through the transformation from Human to Zed, hence the crying, and that they're not immediately hostile. Might explain why they were missing from that chart, too.
Nice video. As for the suggestions, I'd very much like a video about the "cyborg" technology of the combine (gun-/dropships, Striders etc.). I doubt that there's much background lnformation on it though.
Could probably do a combined episode on all of the synths (Advisor pod, dropship, gunship, crab, mortar, shield scanner, strider, and hunter), Maybe even two episodes if the cut synths were included!
I'd love to see one on the backstory of Mann Co! I'd also love an episode on the story of Counter-Strike. While essentially nonexistent, it could be an interesting idea to delve into.
story for counter-strike? pretty basic,a huge wave of terrorist groups attack all over the country. Now all the counter-terrorist teams (GIGN,SAS,SEAL,etc) join together to stop them.
The loud ass Michael bay gas station explosion dosent cause a horde but a quiet lift dose? But yet a car alarm dose but missile strikes dont? Got to love this universe
Kinda sad...People infected, trying to kill people, just because they think their friends or YOU are some kinda demons that are gonna kill them..Which I guess is sadly, but ironicly, true, because you have to gun them the fuck down, so, in a way, does that mean that the zombies think you are scary and they are trying to protect themself? Or others?
Yes! This is the suggestion I submitted last episode. Glad t see your spending more time with the Special Infected, Can't wait for next episode to come out.
Idk maybe the infected knew there are people like them but... They're too dumb to know it's them and the car alarms they get used to it since it's a one way to know where you are
In the end, No mercy has been made canon in Payday, but its not on the same universe. In Payday 2's version of the heist, which is considered a flashback, the Payday gang stole the virus succesfuly and escaped, while the Mercy Hospital ended up being entirely destroyed because of the military. Later it is revealed that someone has been infected with the virus, but instead of becoming a zombie, he just slowly dies within days.
Sorry to tell you but it was confirmed by both valve and overkill software that the no mercy heist in Payday the Heist is not canon to either series stories
I always thought that the special infected originated from their lifestyle. Like the hunters could be free-runners/parkourists suggested by their hood and athletic agility. The boomers could be heavy drinkers Smokers are, well, smokers Chargers (idk) Tanks could be people who went to the gym alot and worked out. The rest idk, but you get my point.
We now know that the Mercy heist was not cannon for Payday and maybe even L4D due to the excistance of Payday 2 and its events just in the same way that hardcore Henry and John Wick arnt in the same universe despite them both being in Payday 2. But if it was cannon for payday and left 4 dead that would mean John Wick Point Break Hardcore Henry CSGO Payday and Left for dead take place in the same universe which would be a massive ass universe XD
Valve's official stance on "Canon" is that there is none. There is no such thing as canon in their series'. (That basically leaves it entirely up to the fans to decide what is canon or not)
The worst part about a Zombie Infection is that it spread through air and when you know it , it kill all your zombie killing badass fantasy lol , unless you are a carrier
I feel like the table is based on the amount of people who play each special, hunter being the most popular, followed by smoker, then the boomer. The charger, jockey and spitter are identical and lower due to them being newer and that at the time of creating the table (before l4d2s release) they did not have the records for which of the new infected were the most popular. The tank is the lowest because there are only certain occasions where you can play as him and lastly, the witch is not listed as she is unplayable in the base game.
It's not airborne because in no mercy in the third safe room on the ceda poster its says "seal doors with duct tape" and someone scribbled it out and said "not airborne"
Does any one know information on that guy in "Death Toll" where you have you fight the horde to get into the safe room cause the guy wouldn't let you in?
That's church guy, he previously let a woman into his saferoom who was infected or a carrier who then infected him. You can find her body curled up against the wall in the saferoom. The survivors find him just as he is transitioning into a special infected, and going pretty crazy, hence why he rings the bell and "BETTER SAFE THAN SORRY". At the end of the chapter he either turns into a boomer, a hunter or a smoker.
You know, there is a Mercy Philadelphia Hospital, the original gang is from Philadelphia, the Payday campaign in Mercy Hospital is in Philadelphia. Long story short, let's just call Fairfield Philadelphia. Just and interesting thing to note.
Thanks to the payday 2 characters for starting the infection by stealing contaminated blood from mercy hospital, the patient they stole the blood from you can hear coughing (possibale smoker?) and Ceda and the police are ordered to stand down because when you get in the elevator after stealing the blood the Army shoots a jet at the hospital roof which would explain why it's all destroyed in the campaign no mercy. Also when you're escaping you see body bags start to come back to life they start to move and twitch. Also in the end you can hear Bane say you guys don't look so well you guys look pale. Edit- I made that comment before l watched haha and I would also like to add you can consider those events Canon because it happened in the same time and Bill was in the elevator in PayDay. And one more theory is the government actually had a cure for green flu
I like how valve mix LFD, CS, Half Life, and Portal. seriously some parts of the maps are connected. it's only a theory but I think valve's going to make a story about all of them connecting
There might not be a witch database in that pie chart because in the rapid rate that the infection mutates, before the pie chart was made there were no witches. Think about it, the area you see witches in a lot of the time would be somewhere a survivor would be heading. They are found in houses a lot of the times, edges of streets. The one thing I can not explain is the bride witch in the passing. Idk where the strain started and how long it took to get to that city, maybe it hadn't hit yet. IDK.
Thanks for the descriptive approach to l4d antagonist. I was actually wondering about the evolutionary phases of the special infected and their rate in the infected populus. Also consider the theory that the special infected could have been under different atmospheric/environmental conditions when they got infected. Or their body physique is unique in some way. I'll post my theory about the special infected when you cover up them in the future video as I understood.
There's actually further evidence that Payday is canon. You can find Wolf's mask in the CSGO map St. Marc, and it's been confirmed that CSGO is a prequel to Left 4 Dead.
Also,idk why,but I feel like the CS-GO organization had something to do with the game(like hl2 and portal,idk how to say it more properly),like the organization existed in the l4d universe,probably as a riot control during the first days,still,we have no confirmations of that,I just think it could be,anyways,it would make up for a easteregg(or a direct connection with the game storyline itself) for a future game(long comment long,might not find much sense into my comment,anyways,great vid guys!)
actually L4D2 and L4D1 are movies in the universe of payday 2 because when u finish a compaign it says XXXX zombies have been hurt while making this movies so its more probably that bill after the event came see the hospital for the good old time when he was an actor
it might cloak itself so the body doesn't identify it as a threat that would explain why the immune are carriers and those who aren't immune have a 0% survival rate(or 0% uninfected)
There's much debate around what could cause the special mutations Those suffering from lung disease or even literally being heavy smokers prior to infection could become smokers Body builders or persons with some noticeable form of higher protein counts could make Tanks Those suffering from genetic/morbid strains of obesity may create boomers Body types could explain Hunters and Jockeys De-composure of the liver or other internal organs dealing with the breakdown of nutrients and/ or a deformity in the stomach could create Spitters But nothing's set in stone May be a stretch to say that witches are caused by those with measurable effects of serious depression Hey Maybe even chargers are mutations of those to fond of masturbation xD
I really love how Valve didn't make them a cliche Zombie from most medias, Zombies in l4d actually Looks and Acts like actual sick people
They are still alive with a rabies kinda virus.
It's because they hired a stuntman to do the work and also added a bunch of creative ideas
Bill woke up in the zombie apocalypse before Rick Grimes made it cool
I'd have to check, but I think the original Walking Dead comic, the one that the show is based on, predates L4D. But the games predate the show. I wouldn't be surprised if the comic influenced the game, which influenced the TV show.
M. Wayne Yeah, I know nothing about the comics.
M. Wayne "*Before* Rick made it cool"
Peepl. *cough* 28 days later *cough*
@@E_V878 Yeah, was about to mention that masterpiece
"Don't believe the signs. Washing your hands won't help when they ATTACK you"
While the collab between payday and left 4 dead is obviously non-canon it's not too much of a stretch to say that something similar may have actually happened. Just remove the payday gang and replace them with a group of terrorists or other organized thieves.
You get counter-strike terrorists instead.
apparently mercy hospital is canon in the payday universe, but its unconfirmed if its canon in l4d's.
@@FurroTheWolf no cs terrorists helped payday 2 gang in go bank to explode it cause you can see money trail in bank go in cs:go map and payday 2 was the first to rob it so they ordered em to explode it and hide the evidences
Yet we conveniently ignore that gunshots should attract the infected too. Like on a similar scale as pipe bombs and car alarms/other.
Tsk tsk, why do you think after a while in any given moment a random horde pummels down on you? That's right.
The infected only hear high pitched noises like the pipebomb beeping
I tested it and gunshots they ignored the gunshots but light
What gunshots? ;)
hearing gunshots only makes them look in the direction and enter the alert state
If you consider Payday mission as canon - the first infected became smoker, because:
first - he got some strange bubbles on his body, just like smoker has
2nd - later he will be coughing just like smoker.
It's hard to say it's canon or not because Valve's official stance on canon of any of their games is that there isn't one.
HeavySandvichGuy1 why am i seeing this as a friday the 13th comment
Thats just a reference also you see bill in the game so he must have left before the bombing to go to a different hospital because he was at a hospital during the outbreak
Both Payday and L4D developers have said it's not canon.
you know the payday mission is not canon even valve has said its not due to confusion
Disease
Emergency
Assecment
Dispatch
=DEAD
coincidence?
I THINK NOT
I guess you could say their Dead...
ZOIDENVOID dead
For the style of game it is, the backstory of Left 4 Dead has always intrigued me
the hunter is the most common special zombie...
we're dead
Windoge 10 Actually, the boomer is from what I've seen.
Windoge 10 Actually, you're right. Bad memory on my part.
The wicth wasn't on there because they died trying to examine her that's what I think (WARNING IM ABOUT TO SAY SOMETHING CRINGY)
But that's just a theory a GAME THEORY
and there are about 4,720,400 Tanks.
And he uses the commons animation?
We are almost dead
It’s weird to see such an old TH-cam series (especially for Valvetimes FIRST series!) with high quality audio; perfect clip selection, easily understood; a script that is well written, greatly performed, AND presented for both veterans of the Valve franchise and people who have never played!
Stuff like this gives me anxiety bc I think about it happening in real life but I'm addicted to watching it.
And I love how most people think of themselves surviving the disease.
DrVetSaveYourPet same
Pira yep...thats me. Thinking that im gonna survive if this was real
I don't know about you but i enjoy the thoughts. But with more blood, sweat, tears and teeth.
If it happens i bet it will be a shitty airborne infection so we all die :(
So, CS:GO, PayDay and Left 4 Dead are in the same universe... wow.
CS:GO also hints it but you might know it
I think all valve games are in the same lore. CS and L4D are the real world, but TF2, HL and portal are like media. This is proven by TF2 figurines in L4D comics and a portal song in CS GO. TF2 and portal are connected with a spy sapper from aperture and half life fits in as it goes along side portal.
+Amaze Doge And L4D campaigns are set in some CS maps.
+Amaze Doge so , cs happend before the l4d event rite
Leonard Fair
Yes.
Oh yeah, it's all coming together.
Oh fuck shit
oh shit fuck
*C O V I D*
This also makes me wonder:
-Was the outbreak accidental?
-Did CEDA (or someone/something else) plan to use this as a weapon?
-What caused the outbreak?
I like to believe that the Green Flu was an experiement (unknown reason). In PAYDAY the outbreak starts when they get the blood samples and bring them to whoever bought them.
The person who bought them tried to make this a weapon or just infect people. This caused the outbreak.
Also if you really want to connect the games you could think that this was to end the terrorists wars (in CS GO). Maybe by creating a weapon that the terrorists used without knowing the results of it.
From what I've heard in the video, this is a contagious, hyperactive Schizophrenia.
Keith is lucky, him and his friend are both immune.
Well, you can see posters in Dead Air that talk about livestock saying how it can spread that way as well.
you don't know if that happened
Unfortunately the Payday storyline isn't canon to L4D but you can still believe how you perceive it.
I always assumed Witches were people who were going through the transformation from Human to Zed, hence the crying, and that they're not immediately hostile. Might explain why they were missing from that chart, too.
+Sniper Fox Zed?
Le Reff
Slang for Zombie
Sniper Fox ah okay, ty
Le Reff
Of course, np
Never knew there was so much lore in L4D. Very nice.
all of valves games go really dead, not sure if l4d connects to half life, but i know portal does for sure
+Itlahic Gunpla Some People Say Left 4 Dead And Counter-Strike Take Place In The Same Universe
@Alex The Awesome Lmao it's just a easter egg. Don't take it so literal
feels like something's in the air
money
the is a man Nice pd2 refrence!
+A53rr420 That's from the first Payday..
wait actually its military jets
Yea more like the flu is.
Left 4 Dead is my favorite franchise from Valve and it has very few info about the story, it is nice to see a video like this!
Nice video.
As for the suggestions, I'd very much like a video about the "cyborg" technology of the combine (gun-/dropships, Striders etc.).
I doubt that there's much background lnformation on it though.
Could probably do a combined episode on all of the synths (Advisor pod, dropship, gunship, crab, mortar, shield scanner, strider, and hunter), Maybe even two episodes if the cut synths were included!
That's almost exactly what he did!
I'd love to see one on the backstory of Mann Co! I'd also love an episode on the story of Counter-Strike. While essentially nonexistent, it could be an interesting idea to delve into.
story for counter-strike? pretty basic,a huge wave of terrorist groups attack all over the country. Now all the counter-terrorist teams (GIGN,SAS,SEAL,etc) join together to stop them.
What would be the point of making up a database for Counter-Strike?
I just did it in a comment. doesnt need a video.
This was one of the most interesting videos I've seen this week. Maybe the whole month.
Good job!
The loud ass Michael bay gas station explosion dosent cause a horde but a quiet lift dose? But yet a car alarm dose but missile strikes dont? Got to love this universe
Kinda sad...People infected, trying to kill people, just because they think their friends or YOU are some kinda demons that are gonna kill them..Which I guess is sadly, but ironicly, true, because you have to gun them the fuck down, so, in a way, does that mean that the zombies think you are scary and they are trying to protect themself? Or others?
Very nice and thorough!
Me: eats chips in the middle in the road
Infected: *starts screaming*
Also infected: wait hol up why is a demonic entity eating chips
"There is something in the air"!!
"MONEYYYYYYYYYY!!
I love this, I love you guys and I love the effort you keep putting into it!
this hits different with covid
Its been so annoying for me for almost 10 years trying to explain to people that the people are not zombies and are INFECTED
Yes! This is the suggestion I submitted last episode. Glad t see your spending more time with the Special Infected, Can't wait for next episode to come out.
I still don't understand why the infected aren't attracted to gunshots, but are attracted to alarms.
Exactly
Idk maybe the infected knew there are people like them but... They're too dumb to know it's them and the car alarms they get used to it since it's a one way to know where you are
In the end, No mercy has been made canon in Payday, but its not on the same universe.
In Payday 2's version of the heist, which is considered a flashback, the Payday gang stole the virus succesfuly and escaped, while the Mercy Hospital ended up being entirely destroyed because of the military.
Later it is revealed that someone has been infected with the virus, but instead of becoming a zombie, he just slowly dies within days.
This is already my favorite ValveTime series. I really can't wait to see one on Aperture, Black Mesa, the Combine, Xen, or TF2.
hold on cedas i played the payday mercy hopital heist and im never ever looking at the text because theres always that cop that hunts me down
In the beginning of dead center is the loudest helicopter ever
Sorry to tell you but it was confirmed by both valve and overkill software that the no mercy heist in Payday the Heist is not canon to either series stories
do combine synths
The developers of the Payday 2 level said it isn't canon in the l4d2 story
Follow the acronym written only letters first!
COVID-19 is the real-life Green Flu (except for the part where people turn into zombies)
no its no like it. because covid is just normal flu but people are panicking
The payday mission has been confirmed to be non-canon
"...increase level of aggression and decrease mental faculty..."
Oh no, all people are infected... oh wait- its just Twitter...
🤣🤣🤣🤣🤣
"The sickness may be related to livestock"
Rochelle “better safe than sorry” reference to the selfish church guy
my thought
They should do a database episode on the Combine, Black Mesa and aperture sciance.
Science*
*Laughs nervously* yea guys 2021 will be fine
In 5:34 you can see the l4d logo on the right
Best content I've came across to watch over and over while working
I always thought that the special infected originated from their lifestyle. Like the hunters could be free-runners/parkourists suggested by their hood and athletic agility.
The boomers could be heavy drinkers
Smokers are, well, smokers
Chargers (idk)
Tanks could be people who went to the gym alot and worked out.
The rest idk, but you get my point.
chargers are the people who beat the meat really hard
Chargers I think would be farmers (ik am late as heck)
love the commentary!
This is the first time I've found the l4d music ominous.
We now know that the Mercy heist was not cannon for Payday and maybe even L4D due to the excistance of Payday 2 and its events just in the same way that hardcore Henry and John Wick arnt in the same universe despite them both being in Payday 2. But if it was cannon for payday and left 4 dead that would mean John Wick Point Break Hardcore Henry CSGO Payday and Left for dead take place in the same universe which would be a massive ass universe XD
So this is just COVID 19 in shorter words just it’s more enhanced in the left 4 dead series
My favorite Database so far.
Dude, I love every content about Left 4 Dead. I really wish for a third installment so VALVe could expand more the lore of the game
This is a really cool idea for this channel. I've always wanted to know more about valve universes but never know where to go
Valve's official stance on "Canon" is that there is none. There is no such thing as canon in their series'. (That basically leaves it entirely up to the fans to decide what is canon or not)
The worst part about a Zombie Infection is that it spread through air and when you know it , it kill all your zombie killing badass fantasy lol , unless you are a carrier
I feel like the table is based on the amount of people who play each special, hunter being the most popular, followed by smoker, then the boomer. The charger, jockey and spitter are identical and lower due to them being newer and that at the time of creating the table (before l4d2s release) they did not have the records for which of the new infected were the most popular. The tank is the lowest because there are only certain occasions where you can play as him and lastly, the witch is not listed as she is unplayable in the base game.
Corona brought me here
Amazing series, please keep it going!
i loved that episode. do more left 4 dead stuff! and portal also!
It's not airborne because in no mercy in the third safe room on the ceda poster its says "seal doors with duct tape" and someone scribbled it out and said "not airborne"
Sometimes when it mutates
Does any one know information on that guy in "Death Toll" where you have you fight the horde to get into the safe room cause the guy wouldn't let you in?
That's church guy, he previously let a woman into his saferoom who was infected or a carrier who then infected him. You can find her body curled up against the wall in the saferoom. The survivors find him just as he is transitioning into a special infected, and going pretty crazy, hence why he rings the bell and "BETTER SAFE THAN SORRY". At the end of the chapter he either turns into a boomer, a hunter or a smoker.
payday is not canon sead by valve and the guys who made paydays it was just made for a colab
In the Payday mission, if you have to escape through the room full of bodies, one of them is moving.
Everyone knows that the charger has his big arm because you can just guess
You know, there is a Mercy Philadelphia Hospital, the original gang is from Philadelphia, the Payday campaign in Mercy Hospital is in Philadelphia. Long story short, let's just call Fairfield Philadelphia.
Just and interesting thing to note.
It's valve...Don't expect an episode 3 of this for several years xD
There won't be a episode 3, they are working on Half life 3
lampenpam
2 more years to hit the '9 year of development'milestone,just a little more
detectedspy Well, the real milestone is duke nukem forever, wasn't it like 12 years or something while that was in development?
Nah, a new game is coming somewhat chose to now. I think.
Underrated video
I think the witch is so rare that CEDA doesn't know about it or knows very little about little about.
This episode was very thorough. Keep up the good work!
Thanks to the payday 2 characters for starting the infection by stealing contaminated blood from mercy hospital, the patient they stole the blood from you can hear coughing (possibale smoker?) and Ceda and the police are ordered to stand down because when you get in the elevator after stealing the blood the Army shoots a jet at the hospital roof which would explain why it's all destroyed in the campaign no mercy. Also when you're escaping you see body bags start to come back to life they start to move and twitch. Also in the end you can hear Bane say you guys don't look so well you guys look pale.
Edit- I made that comment before l watched haha and I would also like to add you can consider those events Canon because it happened in the same time and Bill was in the elevator in PayDay. And one more theory is the government actually had a cure for green flu
you should make a episode on the portal gun
the witch isn't on the pie chart because they are hard to count up and capture, as they don't be controlled easily
I like how valve mix LFD, CS, Half Life, and Portal.
seriously some parts of the maps are connected. it's only a theory but I think valve's going to make a story about all of them connecting
that was really really well thought of and well done hope for more
There might not be a witch database in that pie chart because in the rapid rate that the infection mutates, before the pie chart was made there were no witches. Think about it, the area you see witches in a lot of the time would be somewhere a survivor would be heading. They are found in houses a lot of the times, edges of streets. The one thing I can not explain is the bride witch in the passing. Idk where the strain started and how long it took to get to that city, maybe it hadn't hit yet. IDK.
Goddamn this series is fucking incredible
1:33 is talking about how weak the zombies are while using an axe.
That was a pretty cool episode that sums up the story pretty good :)
Of course Valve would make the epicenter of the zombie apocalypse where I live.
well left 4 dead green flu the story confirmed xD
I swear I hear that hurts or wow from the zombies every now and again
My guess is that witches are missing since no one prior to the survivors from the games ever survived a witch attack to include it on the chart
Imagine you could find the payday gang infected eating money and they just ignore you
This is just some Pro player playing plague inc
Thanks for the descriptive approach to l4d antagonist. I was actually wondering about the evolutionary phases of the special infected and their rate in the infected populus. Also consider the theory that the special infected could have been under different atmospheric/environmental conditions when they got infected. Or their body physique is unique in some way.
I'll post my theory about the special infected when you cover up them in the future video as I understood.
There's actually further evidence that Payday is canon. You can find Wolf's mask in the CSGO map St. Marc, and it's been confirmed that CSGO is a prequel to Left 4 Dead.
The events of payday are not cannon.
Also,idk why,but I feel like the CS-GO organization had something to do with the game(like hl2 and portal,idk how to say it more properly),like the organization existed in the l4d universe,probably as a riot control during the first days,still,we have no confirmations of that,I just think it could be,anyways,it would make up for a easteregg(or a direct connection with the game storyline itself) for a future game(long comment long,might not find much sense into my comment,anyways,great vid guys!)
THIS IS SOME GAME THEORY S**T RIGHT HERE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+thefunny711 Love it.
thefunny711 first its "shit" and this aint a theory
Game theory is shit
Tbh,2 years of rewatching your L4D2 videos intro always remind me of those Japanese trying to speak in English Lmao
actually L4D2 and L4D1 are movies in the universe of payday 2 because when u finish a compaign it says XXXX zombies have been hurt while making this movies so its more probably that bill after the event came see the hospital for the good old time when he was an actor
it might cloak itself so the body doesn't identify it as a threat that would explain why the immune are carriers and those who aren't immune have a 0% survival rate(or 0% uninfected)
I never knew L4D had so much lore.
Now we have this virus!
The Payday Heist isn't cannon
The payday the heist mission is non cannon btw
The valve universe theory suggests that terrorists from counter strike realeased some disease which then lead up to l4d
Theres also a map in cs that also appears in l4d
There's much debate around what could cause the special mutations
Those suffering from lung disease or even literally being heavy smokers prior to infection could become smokers
Body builders or persons with some noticeable form of higher protein counts could make Tanks
Those suffering from genetic/morbid strains of obesity may create boomers
Body types could explain Hunters and Jockeys
De-composure of the liver or other internal organs dealing with the breakdown of nutrients and/ or a deformity in the stomach could create Spitters
But nothing's set in stone
May be a stretch to say that witches are caused by those with measurable effects of serious depression
Hey
Maybe even chargers are mutations of those to fond of masturbation xD