How to Download XCOM: Enemy Unknown

1. Click on the XCOM: Enemy Unknown download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• OS:Windows Vista
  
• Processor:2 GHz Dual Core
  
• Memory:2 GB RAM
  
• Graphics:NVIDIA GeForce 8600 GT / ATI Radeon HD 2600 XT or greater
  
• DirectX®:9.0
  
• Hard Drive:20 GB HD space
  
• Sound:DirectX Compatible
  
• Other Requirements:Broadband Internet connection
  
• Additional:Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, Visual C++ 2008 Redistributable, DirectX and Microsoft .NET 4.

Recommended:

• OS:Windows 7
  
• Processor:2 GHz Dual Core (Intel Core 2 Duo 2.4 GHz or Athlon X2 2.7 GHz)
  
• Memory:4 GB RAM
  
• Graphics:NVIDIA GeForce 9000 series / ATI Radeon HD 3000 series or greater
  
• DirectX®:9.0
  
• Hard Drive:20 GB HD space
  
• Sound:DirectX Compatible
  
• Other Requirements:Broadband Internet connection
  
• Additional:Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, Visual C++ 2008 Redistributable, DirectX and Microsoft .NET 4.

Linux Requirements

Minimum:

• OS: Ubuntu 14.04 (64 bit required)
  
• Processor: 2GHz
  
• Memory: 4GB Memory
  
• Graphics: 512MB*
  
• Hard Drive:16GB HD space
  
• Other Requirements: Nvidia 600 series+, AMD 6000 series+, Intel Iris Pro.
  
• IMPORTANT: Requires 64bit OS to play.

Recommended:

• OS: Ubuntu 14.04 (64 bit required)
  
• Processor: 3 GHz
  
• Memory: 8GB Memory
  
• Graphics: 1GB*
  
• Hard Drive: 16GB HD space
  
• Other Requirements: Nvidia 700 series+, AMD 6000 series+
  
• IMPORTANT: Requires 64bit OS to play.

Mac Requirements

Minimum:

• OS: 10.8.5 (Mountain Lion)
  
• Processor: 2.0 GHz Intel Core 2 Duo (Dual-Core)
  
• Memory: 4 GB RAM
  
• Hard Disk Space: 20 GB
  
• Video Memory: 256 MB
  
• Video Card: AMD HD4000 / NVIDIA 9000 Series (See NOTICE for details)
  
• Additional: Broadband Internet Connection.
  
• NOTICE:The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, NVIDIA 7xxx series, NVIDIA 8xxx series. The following cards require you to have 8GB of system RAM: NVIDIA 320M, NVIDIA 9400 and Intel HD3000.

Recommended:

• OS: 10.9.1 (Mavericks)
  
• Processor: 2.4 GHz Intel Core 2 Duo (Dual-Core)
  
• Memory: 8 GB RAM
  
• Hard Disk Space: 20 GB
  
• Video Memory: 1GB
  
• Additional: Broadband Internet Connection.
  
• NOTICE:The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, NVIDIA 7xxx series, NVIDIA 8xxx series. The following cards require you to have 8GB of system RAM: NVIDIA 320M, NVIDIA 9400 and Intel HD3000.

The XCOM: Enemy Unknown - Slingshot Pack is Now Available!

XCOM: Enemy Unknown will place you in control of a secret paramilitary organization called XCOM. As the XCOM commander, you will defend against a terrifying global alien invasion by managing resources, advancing technologies, and overseeing combat strategies and individual unit tactics.

The original XCOM is widely regarded as one of the best games ever made and has now been re-imagined by the strategy experts at Firaxis Games. XCOM: Enemy Unknown will expand on that legacy with an entirely new invasion story, enemies and technologies to fight aliens and defend Earth.

You will control the fate of the human race through researching alien technologies, creating and managing a fully operational base, planning combat missions and controlling soldier movement in battle.

Key Features

• Strategy Evolved: XCOM: Enemy Unknown couples tactical turn-based gameplay with incredible action sequences and on-the-ground combat.
  
  
• Strategic Base: Recruit, customize and grow unique soldiers and manage your personnel. Detect and intercept the alien threat as you build and expand your XCOM headquarters.
  
  
• Tactical Combat: Direct soldier squads in turn-based ground battles and deploy air units such as the Interceptor and Skyranger.
  
  
• Worldwide Threat: Combat spans the globe as the XCOM team engages in over 70 unique missions, interacting and negotiating with governments around the world.

“The most engaging and visually stimulating take on turn-based strategy I've ever seen.”
– IGN

"A singular achievement that every gamer deserves to experience."
9.5/10 – Game Informer

“Addictive and replayable.”
9/10 – Destructoid

“An amazing, triumphant game right down to its core.” “Outstanding”
5/5 – GameSpy