- Action
- Adventure
- Indie
- RPG
Game
Survivalist: Invisible Strain
It's ten years after the infection started, and rumors are swirling of a strange new terror. Long-established settlements are collapsing, one by one, amid reports of horrific violence. Survivors are running to the hills to escape, taking refuge in the more remote areas of the Pacific Northwest.
It's ten years since the infection started. Long-established settlements are collapsing, one by one, for unknown reasons. Survivors are running to the hills to escape, hoping for safety in remote places. As another refugee, you're here to carve out a new life for yourself - by any means necessary.
About Survivalist: Invisible Strain
- Released
- April 2025
- Developer
- Bob the Game Development Bot
- Publisher
- Ginormocorp Holdings
- Engine
- Unity
- Platforms
- Xbox Series X|S · PC (Microsoft Windows)
Where to get it
Release, studio and platform data from IGDB. Store links go to the sellers, not to us. We do not sell games and we do not host files.
Browse everything
Sorted, filterable and paged. Every link goes to the author’s own download.
From the developers
Official announcements, newest first. Posted on Steam.
- Community AnnouncementsNew small patch in publicbeta (v283)Hello, just a small publicbeta update with a fix for an occasional crash if something gets deleted while you are repairing it, and a fix for the SIS Move Props mod, which it seems got broken by a change I made back in 2025.Also a tweak to how the Dark Past and Loyalty quests select a landmark for a meeting place, they've often been using vehicles along the roads which wasn't the original intent...
- Community AnnouncementsNew patch in publicbeta with pickpocketing (v279), last patch in main (v278)Hello everyone, got kind of a bigger patch for you today as I've added pickpocketing and TAA (Temporal Anti-aliasing). The TAA is on a checkbox in the Settings/Graphics menu, it makes the black outlines look a lot smoother and more stable. Unfortunately it can make some other things a bit blurry when in motion so it's off by default. I prefer it despite the blur but your mileage may vary.The mo...
- Community AnnouncementsNew small patch in publicbeta (v278)Hello I've released a new small patch in publicbeta, mainly because I discovered the last one broke a couple of important things. Fortunately they didn't make it into the main branch, so this is just a publicbeta update.Added settings for loot generation to spawn biohazard cocktails with infection (for modders)Minor fixes for options on action menu for loading different ammo types in guns/bowsF...
- Community AnnouncementsOne year anniversary, new publicbeta patch and translations in main branchHello, Survivalist: Invisible Strain has been out of early access for one year! Well actually that was two days ago. Anyway, seems like a good time for a sale, so Survivalist: Invisible Strain is participating in the Post Apocalyptic Festival on Steam from April 27th to May 4th, with a 50% discount! This festival was instigated by Red Rover Interactive the developers of the upcoming EngineFall,...
- Community AnnouncementsNew small patch in publicbeta (v276)Hello, I've released another small update in the publicbeta branch. This contains some fixes and support for mods, and translator support. Also a slight tweak to combat; previously if you kept swinging your melee weapon at a zombie without being close enough to engage, they would back off, and you could in theory keep doing that forever - now after a few seconds of that they'll just attack no m...
- Community AnnouncementsNew patch in publicbeta (v275)Hello, there's a new patch in the publicbeta branch. It has a few small fixes for mods and translations, but the main change is that the Russian translation has been greatly improved by Pavel Borisov, who also did the Cyrillic fonts - many thanks for that! Here's the change list:Fix for Carter Moreno shooting you if you wait for 1 minute before replying in the Vanished questFix for error loadin...
- Mods indexed
- 524
- Versions
- 0
- Newest tracked
- none yet
- Most disruptive update
- No breakage data for this game
Most downloaded
Measured from the source's own counts, summed across every release.
- ZedmulateIMPORTANT READ CAREFULLY: You must be in beta branch WHATS NEW: V231 - Added v229 beta branch changes. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- NOTES: Added: -...35.4k downloads
- Harmony 2.0.4Redistribution of Harmony 2.0.4 so that each mod doesn't have to bundle it on its own. Harmony is a library that allows mods to run custom code before or after built-in functions, and even rewrite built-in functions entirely. This is the easiest way for mods to inject their custom code into Survi...32.9k downloads
- XtraLargePackXtraLargePack can hold water and lots more weight26.2k downloads
- Ask About SkillsWith it, you can ask others about their skills. We only recruit the people we need.23.1k downloads
- MagnumShoot zombies with slightly bigger bullets! This is an example mod to demonstrate how to add new weapon models to the game.21.1k downloads
- More Storages!This mod includes new storages such as Crates and Underground Cellar! Note! Construction & Toolbox / Shovel is required!18.7k downloads
- Better FarmerA simple mod which automatically assigns an existing NPC community member as farmer which have a 4 star or better rating at farming. It will trigger every few days during day and when the world temp is around 15 degrees. the bigger the NPC community the better the chance to trigger the conditions...18.3k downloads
- Colt_M1911 alias „Colt Government“Adds a pistol with various attachments to the game. They can be adjust individually to the Gun. Hope you will Enjoy,15.8k downloads
- Better Use of ResourcesAll kinds of redundant weapons and equipment can be converted into resources.15.0k downloads
- Trader RebornA simple script that makes the game reassign a new trader on both community trader and roaming traders, if their old one is dead. It does not alter the inventory and inventory resets of the traders. Vanilla friendly Mod. Whats New: V13 - Made only the smallest (4 person) communities spawn them. h...14.8k downloads
- Armor UpgradeAdded the upgrade of armor14.0k downloads
- Meal,Ready-to-EatAdd new Lootable useful food! MRE can be found in Military, Police, House, FEMA, Camp, General Store Building and Some Zombies or Merchant. 1 MRE Box = 12 MRE 12MRE = 1 MRE Box Translated: English, korean13.4k downloads
- SIS Extended: Comfortable LodgingsThis mod introduces comfort mechanics to some buildings that accelerates sleep and injuries recovery to anyone who rests there DEFAULT CONFIGURATION By default Shack will be giving 10% boost to sleep, health recovery and injury healing and WoodCabin will give 35% boost CONFIGURING THE MOD Can be...13.3k downloads
- Earthlys Gun ModWelcome to my gun mod, I made this because I wanted to add a 7.62x51mm NATO/.308 semi-auto rifle to the game. So far I have added -Civilian (Semi-auto) AR-15 -the M4 Super 90 semi auto shotgun (And shotgun slugs as an alternative option to buckshot, along with crafting recipes for making more and...12.9k downloads
- SIS Loot RespawnWhat is this? This mod adds a simple loot respawn mechanic to the game. Buildings that have been investigated in the past and that belong to no community will have loot respawned after a few days, as along as no characters are nearby or inside of it. When a building gets loot respawned in it, it...12.6k downloads
- More Useful TradersWith the improvement of the trade level of the trader, he will unlock more functions. Level 0: useless Level 1: purchase Medicine Box Level 2: purchase Saplings Level 3: purchase Ammunition Box level 4:purchase Ammunition level 5: purchase Firearms Box12.3k downloads
- SIS FishingChange Notes NPC's can now fish for their communities! Farmers, when finished tending to their crops, will go fishing. You can configure the amount of fish and the time it takes, as well as the interval between fishing sessions. What is this? This mod adds fishing to the game. You can now use two...11.7k downloads
- SIS Melee ExpansionChange Notes Added Metal Baseball Bat. Fixed punching animation not working for spiked brass knuckles. Changed SurvivalKnife from MeleeWeapon type to HuntingKnife type. What is this? This mod adds over 40 new melee weapons to the game. You will find hatchets, axes, knives, hammers, swords, sports...11.7k downloads
- SIS CrossbowsWhat is this? This mod adds crossbows to the game with their custom sounds. These weapons are very silent and precise. They require bolts, of which there are three types: wood, aluminum and practice bolts. You will be able to find aluminum and practice bolts around the world, and you can craft wo...11.7k downloads
- Equipments Extended [v1.5.1]Mod description : Pack consisting of add-on weapons plus stealth versions of vanilla clothes, armor and backpack. - What's new in : Fixed most bugs and error (probly) - What's new in : AR15 (with and without sight) Tommy Gun (upgraded from TacThompson) PPSh-41 - For version , i only changed some...11.6k downloads
- Very Easy StartMod created initially for my own purposes, but I decided to share it with the community. Designed mostly for impatient people like me and the quick start of the settlement. Clothes: 10-20pts (depending on the season), Equipment: 40pts, Skills: 50pts11.3k downloads
- AskThis mod lets you ask survivors their age, what stuff do they like, their sexual orientation and if they're in a relationship Truly gamechanging :P 5% respect and 5% admiration needed to ask survivors their age 10% respect and 10% admiration needed to ask survivors what stuff do they like 20% res...11.2k downloads
- Zedmulate_中文简体翻译各位兄弟，萌新，如果你想要享用zedmulate。以下这步操作请不要忘记！！！！！！！！！ 右键游戏——属性——测试版——版本换为publicbeta（不然点开mod就会报错！！！） If you are a mod author and you also want your mods to have a Chinese translation version, you can contact me！！！ 另外各位兄弟别忘了点赞把翻译推上去让更多同胞看见，不用再受苦！！！ 首先谢谢作者做出了这么好的mod！我本人也是十分喜欢这个模组。我参照了大哥别杀我兄弟的翻译模组形式（因为这位兄弟我得...11.0k downloads
- Range Weapon System UpgradeThe disassembly, production and improvement of long-range weapons are added, and the accuracy of NPC will also be improved.10.9k downloads
Browse all 524 Survivalist: Invisible Strain mods Sortable by downloads, rating and date.
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Why Survivalist: Invisible Strain mods break
A mod is compiled against one version of a game. When the game updates, anything that reached into the parts that moved stops working, and it usually stops working silently rather than with a message that explains itself.
That is what the table above counts. It is not a guess: each row is a mod the community has reported as broken by that specific release. The number is a fair measure of how disruptive an update was, and it is the reason people delay updating a game they have modded heavily.
Common questions
Does IndexGG host Survivalist: Invisible Strain mods?
No, and it never will. Every download link points at the author's own page on Nexus, GitHub, CurseForge or wherever they published it. We index the ecosystem; the files stay with the people who made them.
Where does the compatibility data come from?
From the communities that maintain it in the open, not from guesswork. Each claim carries how it is known, so a reported breakage is never presented as though the author said it.
Why is a mod listed as broken when it works for me?
Compatibility depends on your exact game version and the rest of your load order. A mod marked as broken in one release may work fine on an older one, which is exactly why the version is recorded next to the claim rather than a bare yes or no.