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Undead brings a whole new scenario to Prison Architect: one where the only objective is to survive. ...

Undead brings a whole new scenario to Prison Architect: one where the only objective is to survive. Save your inmates and fight off the undead attacks in this new, spooky expansion!

Features list (also available in “Escape Mode”)

Welcome the Graveyard

This brand new Quick Room satisfies your inmates’ needs for Freedom and Comfort, making them feel calmer for 12 hours. Be mindful when you add gravestones though, as they will easily interrupt this peaceful atmosphere…

The Rise of the Dead

In Undead, no one is safe. And there are many ways to become Infected. One inmate can get sick, some others can be bitten by an unfriendly undead, or again a bunch of infected inmates can rise (aka spawn) directly from the Graveyard. Wardens have no power over the Infected units, they will move and act independently in the prison until stopped. Inmates and guards can try and fight them off, but if they fail, they will join the deadly bunch!

Who You Gonna Call? Bounty Hunters!

When things go south (because they will) and your prison can’t hold off the outbreak, call the Bounty Hunter Emergency Service: tough, trained bounty hunters will join your fight against the undead.

New Traps, Techniques, and Weapons

Desperate Times Call for Desperate (and creative) measures. Use Zombie chum to lure the undead, build a walled-off area and lock them inside, or steal that glorious chainsaw you’ve been eyeing for a while: everything is allowed to fight off the horde.

© 2022 Paradox Interactive AB, PRISON ARCHITECT and PARADOX INTERACTIVE are trademarks and/or registered trademarks of Paradox Interactive AB in Europe, the U.S., and other countries. Developed by Double Eleven Limited. All other trademarks, logos, and copyrights are property of their respective owners.

NOTICE: This content requires the base game Prison Architect on Steam in order to play.

Windows Minimum Requirements:

OS:Windows 7 64-bit
Processor:Intel Core2 Duo 2.4Ghz or Higher / AMD 3Ghz or Higher
Memory:6 GB RAM
Graphics:Nvidia 8600 / Radeon equivalent (2009 era)
Hard Drive:400 MB HD space

Mac Minimum Requirements:

Processor:2009 era Macbook Pro, Core2 Duo processor
Memory:6 GB RAM
Hard Drive:400 MB HD space

Linux Minimum Requirements:

OS: Ubuntu 18 or later
Processor: Intel Core2 Duo 2.4Ghz or Higher / AMD 3Ghz or Higher
Memory: 6 GB RAM
Graphics: Nvidia 8600 / Radeon equivalent (2009 era)
Hard Drive: 500 MB HD space

To activate the Steam key you've received, follow the instructions below;

First up, open the Steam client. (If you don't have it, simply click the "Install Steam" button here => Steam Store )
Sign in to your Steam account. (If you don't have one, click here to create a new one => Steam Account)
Click on the "ADD A GAME" button in the bottom corner of the client.
Then, select "Activate a product on Steam..."
Write down or copy-paste the activation key that you've received from %s in the window.
Your game is now visible in your library! Click on your "Library".
And finally, click on the game and select "Install" to start your download.