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Survivalist: Invisible Strain

$11.99
Release Date:
Developer:
Bob
Platforms:
Windows
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About This Game

Survivalist: Invisible Strain is an open-world colony-building sim set in the zombie apocalypse, often compared to State of Decay, Project Zomboid, Rimworld, Kenshi, or "The Sims but with zombies".  It focuses on characters and relationships as well as survival.

You can talk to anyone...

All living characters in the world have names and personalities. They remember your actions, and their memories affect their mood and their opinion of you. They have their own lives: gossiping, eating, sleeping, keeping warm, working and fighting. Some will give you quests; it's up to you how or whether to complete them. Use negotiation, friendship, violence, stealth or trickery to achieve your objectives!

You can recruit anyone...

You can recruit other survivors by making them like you, or respect you, or fear you. As you recruit followers they'll need a place to sleep, a steady food source, a fire to keep warm, and walls to keep out enemies. You'll need to manage their morale and relationships; sometimes they'll get depressed, or start fighting each other. Sometimes they'll kiss and make up. Sometimes they'll want to hang out with you, or chat you up.

You can chop down trees, mine rocks, and look for other resources in the abandoned towns dotted around the map. Set traps for enemies, or rabbits. Hunt deer, keep chickens, grow crops, or take more desperate measures if you're really hungry! Assign your community members roles such as Farmer, Chef, Arrow Crafter, etc. Over time you can build a well-defended, self-sufficient settlement that even produces its own bullets.

You can be anyone...

When you start a new game you can set up your character's appearance, clothing, equipment, skills, and personality. Different dialog options are available to people with different personality traits.

You can fight anyone...

The gameplay is a hybrid of Third Person Action and Real Time Strategy. Directly control each character in the third person action view, or go into the overhead view to assign orders. You can target your enemies' legs to slow them down, or try to hit their heads for massive damage. You can dodge or block in melee combat - and so can your enemies. Different characters have different skill sets and can level up to improve their Archery, Firearms or Hand to Hand abilities. Eating better food improves your Constitution, which makes you more likely to survive when you lose a fight.

You can kill anyone...

You can sneak up on enemies and assassinate them, or just knock them out cold and steal their stuff. Throw bottles or chunks of meat to distract zombies. Wear camouflaged clothing to boost your Stealth skill. Animals and zombies have a keen sense of smell, so make sure you check the wind direction!

You can order your community to attack enemies en masse, or get one person to act as a lone assassin. Fight using melee weapons, bows and arrows, guns, and explosives. Fight dirty with infected weapons.  Repair vehicles and run your enemies over!

But you can't trust anyone!

There is always the lurking danger of Invisible Strain, a mysterious new strain of the zombie virus. Those infected seem normal as they infiltrate your group and spread the virus, until one day they'll turn on you!

GAME MODES

Story Mode

Introduces the game world and mechanics with a hand-crafted story. You've come to Moose Valley seeking safety but everything here is falling apart - can you hold a settlement together?

Sandbox Mode

A randomly generated world with a loose story and quests that will vary in different playthroughs. Find a new home and build a community in the post-apocalyptic wilderness.

Steam Workshop

There is an active modding scene with a large number of different gameplay mods and some all-new stories.

Play with friends!

Get up to 3 friends to join and help out in online co-op!  (Available in all the above modes, max 4 players)

Screenshots

User Reviews

Very Positive
43 user reviews
86%
Positive
4 hrs at review
Not Recommended

Not bad, but I can't recommend it. I bought the game about a year into early access, and it does not feel significantly better since, and it's now out of early access. Content has been added, but the bones are still as bare and janky as before. I still like the core concept, a hybrid of survival RTS and controlling a single character, and hope the developer eventually polishes this diamond in the rough, but on balance, in the current state, and given that it is no longer in early access, I have to give a thumbs down.

10 helpful
4 hrs at review
Not Recommended

Unfortunately all of the actual reviews are blocked out by your usual mouth-breathers. Perhaps in a few decades. I dunno how it's out of EA, but the game still feels as jank as ever. (I mean, it launched on steam in April but has supposedly left EA? What?) Can't really advocate for people throwing clown awards onto legit reviews, which is really just... Well... it's really just something that even the most terminally online 4channer wouldn't do. Also, feel free to clown award this, though just think - You could use that time to train yourself not to mouth-breathe your stank breath onto your monitor all day long!

3 helpful 4 funny
277 hrs at review
Recommended

This is an okay game. I haven't played the previous one. I had the game on but minimised often, so my hours aren't all gametime. TL/DR: It's very similar to State of Decay (skills, feel, gameplay) and has job assignments and a base economy like RimWorld. (jobs, social aspects). The game gets the basics right, and that can keep you entertained for a while before the feeling creeps in that you've seen it all. I mean, sure, you can add your own challenges… but in the end… that "stealth archer – must have been the wind" build always looks so tempting if you know what I mean. Mechanics-wise it's a fairly simple yet solid game, and it involves… zombies. There are different types, some stronger than others. Fighting can turn from easy to hard quite easily. Mostly because you have limited stamina, zombies don't, and you can quickly find yourself outnumbered and, more importantly, out of breath if you start fighting without making sure there aren't more zombies, just out of sight whi...

2 helpful
406 hrs at review
Recommended

I'd buy again, Tinkering needed with role assignments... Farmers that harvest only, water, all seeds lock to level 1,2,3,4,5... builder that sources and axe bearers that don't log a assigned area or only assigned tree's.. . .

1 helpful
24 hrs at review
Recommended

This game is super unique with its style and having a friend or two makes it even better. One of the best zombie games ive ever played.

1 helpful
198 hrs at review
Recommended

تبي تعيش تجربة انك تعيش وسط ناس محاصرين بالزونبي ؟ جرب ذي احداث عشوائية تصير لك بشكل ممته يعني مثل واحد من جماعتك يغدر فيك ولا تقتل واحد و تشوف اخوانه جياين ينتقموا الصراحة حاجة ادمانية

1 helpful
50 hrs at review
Recommended

the first part was good and this one is even better, probably one of the most overlooked games on steam. if you are looking for a zombie game like... say e.g. state of decay but without all of the the predetermined nonsense ... than this is a game for as it has all the critical aspects of a base building survival zombie RPG that you could wish for. controls are a bit to get used to as well as the sleeping mechanism but apart from that it beats the aforementioned game even though s.o.d. and s.o.d.2 are not bad games but this one is clearly better in terms of freedom of game play. and don't let yourself get fooled by the graphics!

1 helpful
17 hrs at review
Recommended

Great Game ! Third person view total change the perspective of the game !

1 helpful
125 hrs at review
Recommended

Game is damn great. I wish there was a more larger map or like a more global type

1 helpful
23 hrs at review
Recommended

i love to goon to the zombies that have big boobas

1 helpful 5 funny

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System Requirements

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 or higher
  • Processor: 2.0 GHz Intel quad-core and above (Subject to change)
  • Memory: 4 GB RAM
  • Graphics: NVIDIA GTX 660m or equivalent (Subject to change)
  • DirectX: Version 10
  • Storage: 3 GB available space
  • Additional Notes: Download the free demo to find out how well your PC can run it!

Recommended

Recommended:
  • Requires a 64-bit processor and operating system

FAQ

How much does Survivalist: Invisible Strain cost?

Survivalist: Invisible Strain costs $11.99.

What are the system requirements for Survivalist: Invisible Strain?

Minimum: Minimum: Requires a 64-bit processor and operating system OS: Windows 10 or higher Processor: 2.0 GHz Intel quad-core and above (Subject to change) Memory: 4 GB RAM Graphics: NVIDIA GTX 660m or equivalent (Subject to change) DirectX: Version 10 Storage: 3 GB available space Additional Notes: Download the free demo to find out how well your PC can run it! Recommended: Recommended: Requires a 64-bit processor and operating system

What platforms is Survivalist: Invisible Strain available on?

Survivalist: Invisible Strain is available on Windows PC.

Is Survivalist: Invisible Strain worth buying?

Survivalist: Invisible Strain has 86% positive reviews from 43 players.

When was Survivalist: Invisible Strain released?

Survivalist: Invisible Strain was released on Apr 25, 2025.

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