Survivalist: Invisible Strain

Survivalist: Invisible Strain

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What is the invisible strain?
I'm new to the game and i cant seem to find anything on the wiki for what the invisible strain actually is, i just don't wanna screw myself over on my first playthrough by toggling the option.
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Showing 1-15 of 29 comments
Seaghauwn Jun 14, 2020 @ 10:23pm 
its a strain that passes through the air and infects people turning them into zombie from what i remember reading
Tizferatu Jun 14, 2020 @ 10:51pm 
It's a "strain" of the zombie virus that isn't detectable from the eyes/general appearance of a person.

"Infected" act like normal NPCs* and go about their business mostly like normal. Until no one is looking anyways.

If they infiltrate the players crew, when no one is looking they'll spread the strain by biting others in the player's crew.

If all of the player's crew (except the main character) get infected, they will all turn into whites and attack the player the next time the player shows up around them (the game also ninja-saves over your last save I believe).

You can learn how to "interrogate" NPCs from talking with other NPCs (some of the invisible strain dialogue "teaches" you some interrogation dialogue, which will show up to you as "I need to talk to you..." when talking to NPCs once learned).

When "interrogating" you need to watch the face of the NPC to see how they react. If they do a big smile, they're infected with the IS.

If they're in your crew, kick them out and kill them. If they're in an NPC settlement you can more or less ignore them other than keeping non-main character crew memebers out of that settlement (they can be infected).

There's currently no way to convince the settlement their member is infected and expel them (I'll probably try to mod this in at some point if the dev doesn't do it). For now you would have to recruit the infected, take them into the woods, kick 'em out, and off 'em. That will make the settlement dislike you.

There's also a brain scanner that you can find/buy but without delving into very complicated math it's only useful for detecting if someone is not infected (anyone that registers a 0 is in the clear).
Jersmall Jun 15, 2020 @ 8:18am 
a new stronger strain that seems to come out when people get angry or hurt. it festers and only comes out in specific times so it has a chance to spread before showing itself.

you best NPC friend could have it even though hes being normal ish.
Last edited by Jersmall; Jun 15, 2020 @ 8:19am
ocelot629 Jun 16, 2020 @ 8:40am 
Basicly invisible strains are zombies that try to hide amongst the normal population, biting people if they are your faction and slowly converting them all and eachother. If they manage to convert your entire community, they'll confront you with some unique dialogue before overriding your save and turning your entire community into invisible strain zombies.

invisible strain zombes are their own type of zombie when they turn into zombie form, despite the common misconception that they white strain zombies. they are not, their eyes don't change color even when their skin turns into a dark or pale green and they are VERY resistant to being crippled, trust me I've dealt with a fair share of looters turning on death and they are stronger than white strain zombies, far stronger, whereas 4-6 shots from a bow will cripple a white strain zombie, an invisible strain can take likely more than 16 or even 20 shots and still run mach 10 at you.

They also appear as a very pale teal color on the minimap, which is hard to tell from white strains, but it is different (although the contrast on the minimap does need improving since its still pretty darn hard to tell with a quick glance while having several of these running at you in full body armor and lunging at you)

Unlike most zombies that show their strain in the UI like "green strain!" "red strain!", invisible strain zombies don't display their strain but still possess the different UI color which is an interesting design decision, not really anything groundbreaking or helpful, but its there and helps to identify them in the heat of battle when white strains are also present.

back onto detection and giveways...

basicly once you reach a certain distance from them, they'll try to bite a community member and will infect them if successful, sometimes though this will even include traders which can provoke them and cause conflict. a good giveaway when a lot of people are infected is people getting injuries without explanation.

You can detect them in several ways, with the most reilable being via interrogations with 3 possible points of smiling with all 3 of the interrogations. only the main character can use interrogations, but community members can learn them for you. to unlock an interrogation you require the personality, cyinical, skeptical or smart and a correct dialogue option for the dialogue that unlocks it (for smart the dialogue will pop up regardless of personality but the option unlocked by smart requires both people to be smart to access the unlock). you then look for an evil quick smile during the dialogue to detect infected.

They also have some subtle signs, for example they can sometimes growl and snarl like a zombie, complete with a wide open mouth. people can also rarely mention hearing such noises coming from the camp.

They also lie constantly even lying against those they are supposed to respect and against their own previous personality, which is a sign of a potental invisible strain in camp, but only works with a good insight and can still be a false positive in some situations.

The brain scanner is a rare item that gives a % of how likely someone is infected, it isn't definite but if it is high, it gives a good rough estimate of who and who not to interrogate if you want quick recruits.

Some invisible strains are exceitable which means they have a hidden meter that ticks up with some events, when filled they'll force a save and say something bizzare and disgruntled like "yeah, feels good to kill something" and then forcing a save and turning into an invisible strain on you which can be dangerous if you have a decent combat skill of 3-4 in something like archery or hand-to-hand (forget firearms, they are already useless enough, you don't want more zombies stealing your lock-on when fighting these ones, trust me).



(to be honest though, while it sounds scary, its pretty much a gamechanger and is pretty fun to have enabled, since it not only gives a threat that emerges within your community but sometimes even outside, the first looter you fight might even suddenly lunge on top of you and try to bite you. along with keeping you on your toes.

You can get some serious plot twists despite its simple nature, with people who were with your community from the beginning turning out to be the actual carrier of infection who turned your community and not the recruit you newly got. although the forced saves are kinda annoying in the long run.)
hOLDtHEdOOR Jun 16, 2020 @ 5:57pm 
All I've seen of the invisable strain is when one who has it dies or goes hypotherrmic then they turn into a white zombie.

Scares me to think that if they have it they could be biting other people in my tribe.
Nooblistic Jun 17, 2020 @ 1:11am 
I got a person in my group that always growls like a zombie. does that have to do anything with the strain??
MilkSteak Jun 17, 2020 @ 1:58am 
Originally posted by Nooblistic:
I got a person in my group that always growls like a zombie. does that have to do anything with the strain??

yup, that's an obvious sign.
kill them before they spread it to the other member
Andy Mil Jun 19, 2020 @ 11:13am 
I haven't see anyone with this type of zombie on Youtube yet and I also feel too lost to continue playing the game even just start and already learn how to kill zombie easily

but now I want to see this new type in action!
Last edited by Andy Mil; Jun 19, 2020 @ 11:15am
dasclay Jun 19, 2020 @ 12:48pm 
I was in a camp once trading, and as I was standing there I got a random NPC run up and try to bite the other NPC that was with me, I was able to knock it away, and it didn't cause aggro so not sure it was a glitch or what... but when I tried to talk to people about it... no one said anything. lol
NEVER went back to that camp
CellNav Jun 19, 2020 @ 1:59pm 
Originally posted by ocelot629:
Basicly invisible strains are zombies that try to hide amongst the normal population ... etc,etc.

+1 to your knowledge Dr Ocelot of 629 ... :) ... very helpful post.

You are correct regarding plot twists. I have the strain off right now and the game is rather ... dull. However, my current game is just a dry run on my own "how-to" with game mechanics. Also, the game replenishes people, and that's why my game seems a bit dull at the moment (not to mention killing the only looter group on my small map (1/2 km map = slower game pace).

I have an idea regarding the IS ... Containment?

Has anyone created a small chicken wire enclosure with one locked gate? If the gate's rule is always closed then ... the npc cannot escape, perhaps only to die? using chicken wire allows us to shoot through the fence, just as long as the "IS NPC" doesn't have a range weapon (or no weapons at all).

Interesting .... :P
Last edited by CellNav; Jun 19, 2020 @ 2:00pm
hOLDtHEdOOR Jun 19, 2020 @ 8:38pm 
My first playthru I started hearing growls all over my camp and I thought it was a bug, turns out half my camp was infected with the invisible strain. Anyone infected by it will growl and will bite others infecting them so if you hear a growl find out who is doing it and get rid of them. The best way to find out how is just look at them for a minute or two and if they growl kill them.
Aieonae Jun 19, 2020 @ 9:22pm 
OMG I think I encountered it once...and the worse thing was it also overrides all the character saves, it does make me ponder if their meat are infectious?

Well, its winter and my character is hungry...
Andy Mil Jun 19, 2020 @ 11:22pm 
Originally posted by dasclay:
I was in a camp once trading, and as I was standing there I got a random NPC run up and try to bite the other NPC that was with me, I was able to knock it away, and it didn't cause aggro so not sure it was a glitch or what... but when I tried to talk to people about it... no one said anything. lol
NEVER went back to that camp

I think the strains is create by government that plan to mind control population but fail and the new one is what they almost success
and i think this one infect people really fast through bite and cause them under mind control and try to blend in people so they not blame when they get bite etc.
Last edited by Andy Mil; Jun 19, 2020 @ 11:24pm
Diarmuhnd Jun 19, 2020 @ 11:53pm 
Originally posted by 茉莉 มะลิ Mari マリ:
Originally posted by dasclay:
I was in a camp once trading, and as I was standing there I got a random NPC run up and try to bite the other NPC that was with me, I was able to knock it away, and it didn't cause aggro so not sure it was a glitch or what... but when I tried to talk to people about it... no one said anything. lol
NEVER went back to that camp

I think the strains is create by government that plan to mind control population but fail and the new one is what they almost success
and i think this one infect people really fast through bite and cause them under mind control and try to blend in people so they not blame when they get bite etc.
I found a laptop that had some files on it from the old 'internet' that said it was alien visitors that came to Earth to pick up the crew of that crashed alien space ship they kept at Are 51.
And when the aliens discovered the government vivisected the few alien crash survivors for 'science' they got upset and dropped viral bombs that targets only humans and no other lifeforms on the planet.
It had more files, but the that ex military Looter Leader died under interrogation before giving up the passwords. Que sera sera, his head was worth 200 gold after all.

edit: This was only RP crap, i did not find a laptop in game. But stuff like that would be cool. lol.
Last edited by Diarmuhnd; Jun 19, 2020 @ 11:57pm
Aieonae Jun 20, 2020 @ 12:25am 
so does eating human meat spreads IS as well?
Last edited by Aieonae; Jun 20, 2020 @ 12:26am
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Date Posted: Jun 14, 2020 @ 8:43pm
Posts: 29