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Monstrum

Face your fears in Monstrum: a rogue-like horror where every playthrough is unique. Outrun, outsmart, and survive the nightmare.

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About the game

Monstrum is a first-person survival horror game set on a procedurally generated derelict cargo ship. With permadeath and AI-driven predators, each playthrough offers a unique challenge. Scavenge for tools, outwit terrifying monsters, and find your escape.

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Secure payment

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Frequently Asked Questions

How do I activate a Steam key?

To activate a CD key on Steam, follow these steps: 

  1. Launch the Steam client on your computer and log into your Steam account. If you don't have Steam installed, you can download and install it from the official Steam website.
  2. Click the Games menu option at the top of the Steam client. 
  3. Select Activate a Product on Steam.
  4. Follow the onscreen instructions to complete the process. 
  5. Once the game appears in your library, download and install it by clicking on it and selecting the Install button.

If you encounter any issues during activation, please see this Retail CD Keys article for more info. If problems persist, you may contact Xsolla Customer Support at Xsolla Help Center.

What are the supported languages?

Interface: English

Full Audio: English

I have an issue with my purchase. How can I get help?

If you have any issues with your purchase, please email us at support@xsolla.com or simply click on the customer support button located on the bottom left of the homepage to start a live chat. In rare cases, it may take up to a few minutes for emails from Xsolla Mall to deliver.