In 2013 the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the Earth's surface into a poisonous wasteland. A handful of survivors took refuge in the depths of the Moscow underground, and human civilization entered a new Dark Age. The year is 2033.

This title is only activated on the Steam platform. A step-by-step guide has been provided on how to activate this game. Follow these instructions to quickly unlock and enjoy your new adventure. Happy gaming!

Open Steam:

• Launch the Steam client on your computer. If you don’t have it installed, download and install it from Steam's official website.

Log In:

• Sign in to your Steam account. If you don’t have an account, create one by clicking "Create a new account".

Navigate to "Activate a Product on Steam":

• Click on the "Games" menu at the top of the Steam client.
• Select "Activate a Product on Steam".

Enter Your Product Key:

• Follow the prompts and enter the product key you received when prompted.

Complete Activation:

• Follow the remaining instructions to complete the activation. Your game will be added to your library and ready for download.

This Game may contain content not appropriate for all ages, or may not be appropriate for viewing at work: Some Nudity or Sexual Content, Frequent Violence or Gore, General Mature Content

Windows:

• OS *: Windows Vista, 7 or 8 (64-bit only)
• Processor: Dual Core CPU (2.2+ GHz Dual Core CPU or better)
• Memory: 2 GB RAM
• Graphics: DirectX 10, Shader Model 4 compliant graphics cards (GeForce 8800 GT 512 MB, GeForce GTS 250, etc)
• DirectX: Version 10
• Storage: 10 GB available space
• Additional Notes: 64-bit only

* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.

MacOS:

• OS: OS X 10.9.5 Mavericks or newer
• Processor: 3.2 GHz Intel Core i5
• Memory: 8 GB RAM
• Graphics: Radeon HD7950 3GB / NVIDIA GeForce GTX 750m 1GB
• Storage: 10 GB available space
• Additional Notes: Notice for OS X Yosemite 10.10.5 users with an Nvidia graphics card at or above the minimum specification listed: Currently separate drivers are available to fix performance issues specifically affecting Nvidia users who are using OS X Yosemite. These drivers are currently only compatible with OS X Yosemite 10.10.5 and can be found here

* Starting February 15, 2024, the Steam Client will no longer support 32-bit games or macOS 10.14 or lower.

SteamOS+Linux:

• OS: 64-bit Ubuntu 12.04 or 14.04 or Steam OS
• Processor: Intel Core i5 2.7 GHz (or equivalent AMD)
• Memory: 4 GB RAM
• Graphics: NVIDIA Geforce 460 / AMD 5850 with 2GB VRAM
• Storage: 10 GB available space
• Additional Notes: Due to OpenGL 4, Intel video cards no longer supported

Windows:

• OS *: Windows 7 or 8 (64-bit only)
• Processor: Any Quad Core or 3.0+ GHz Dual Core CPU
• Memory: 4 GB RAM
• Graphics: DirectX 11 compliant graphics card (GeForce GTX 480 and above)
• DirectX: Version 11
• Storage: 10 GB available space
• Additional Notes: 64-bit only

* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.

MacOS:

• OS: OS X 10.9.5 Mavericks or newer
• Processor: 3.2 GHz Intel Core i5
• Memory: 8 GB RAM
• Graphics: Radeon HD7950 3GB / NVIDIA GeForce GTX 775m 2GB
• Storage: 10 GB available space
• Additional Notes: Notice for OS X Yosemite 10.10.5 users with an Nvidia graphics card at or above the minimum specification listed: Currently separate drivers are available to fix performance issues specifically affecting Nvidia users who are using OS X Yosemite. These drivers are currently only compatible with OS X Yosemite 10.10.5 and can be found here.

* Starting February 15, 2024, the Steam Client will no longer support 32-bit games or macOS 10.14 or lower.

SteamOS+Linux:

• OS: 64-bit Ubuntu 12.04 or 14.04 or Steam OS
• Processor: Intel Core i7 2.5 Ghz (or equivalent AMD)
• Memory: 8 GB RAM
• Graphics: NVIDIA Geforce 680 / AMD 7870 with 2GB VRAM+
• Storage: 10 GB available space
• Additional Notes: Due to OpenGL 4, Intel video cards no longer supported