DeadOS

Citywide zombie outbreak simulator with populations of up to 25,000

Benn Powell · Released Apr 29, 2021 · Early Access

Reviews: Very Positive; 98% of 189
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 6 days ago; Oct 22, 2026
Minimum PC: 470 GTX; 8 GB RAM · 1 GB disk; Full requirements

What is DeadOS?

DeadOS is a single-player, Early Access sandbox set in a city during a zombie outbreak. You create city blocks, adjust settings such as zombie speed, human accuracy, and ammunition, then observe the spread or take control of a survivor or infected individual.

For you if...

+you like open-ended play driven by your own experiments
+you enjoy retro visuals in simulation games

Not for you if...

−you want cooperative play or competitive multiplayer
−you prefer a guided campaign with fixed objectives

What players say

98% of 189 reviews are positive

Players praise civilian behavior and police responses, particularly panicking crowds, barricades, and efforts to contain the infection. Older reviews criticize limited content and repetition during longer sessions.

Screenshots and trailer

DeadOS system requirements

Minimum: 470 GTX, 8 GB RAM, 1 GB of disk space.

As published by the developer.

Can my PC run DeadOS?

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Minimum

OS: Windows 7/8/10
Processor: Quad-core Intel or AMD processor, 2.5 GHz or faster.
Graphics: NVIDIA GeForce 470 GTX or AMD Radeon 6870 HD series card or higher.
Memory: 8 GB RAM
Storage: 1 GB available space
DirectX: Version 11
Notes: Game runs on Unreal Engine 4.

Does DeadOS have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does DeadOS run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 8
Steam features: Family Sharing
Languages: Text only: English.

Does DeadOS use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam