Survivalist: Invisible Strain

Open-world zombie colony sim built around relationships and survival

Bob · Published by Ginormocorp Incorporated · Released Apr 25, 2025

Action Adventure Indie RPG Simulation Strategy

Reviews: Very Positive; 87% of 4,557
Recent reviews: Mostly Positive; 77% of 49 in 30 days
Playing now: 144; right now
Steam Deck: Verified
Last update: 1 month ago; Aug 19, 2026

Free demo available, 0 playing it now: get the demo.

What is Survivalist: Invisible Strain?

An open-world zombie survival and colony sim that combines direct third-person control with an overhead view for issuing orders. You gather resources, build and defend a settlement, recruit survivors, manage their needs and relationships, and use dialogue, stealth, or combat to complete quests, alone or in online co-op.

For you if...

+you like survival shaped by character choices and relationships
+you enjoy alternating direct action with strategic colony management
+you want both solo and online cooperative play

Not for you if...

−you prefer linear levels over open-world survival
−you dislike managing several survivors and their needs
−you want combat without settlement or resource management

What players say

87% of 4,557 reviews are positive · 77% of 49 in the last 30 days

Players praise the distinct survivor personalities, memory system, character customization, and stories that emerge while building a settlement. Common complaints focus on clunky controls and menus, limited guidance, heavy micromanagement, and combat balance, especially raiders with seemingly unlimited ammunition and reinforcements.

Screenshots and trailer

Survivalist: Invisible Strain system requirements

As published by the developer.

Minimum

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

PC version details

DRM, required accounts, controller support and Steam features.

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 33
Steam features: Workshop, Cloud saves, Family Sharing, Trading cards

Steam Deck: Verified

All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck

Multiplayer and co-op

Languages

Text only: English, Japanese, Korean, Simplified Chinese, Italian, Hungarian, Turkish, French, Spanish - Latin America, Lithuanian, Russian, Spanish - Spain, Portuguese - Brazil, German, Czech, Vietnamese, Indonesian, Ukrainian.