How to Download X-COM: UFO Defense

1. Click on the X-COM: UFO Defense 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

• Supported OS: Microsoft® 2000/XP/Vista®
  
• Processor: 80386 processor or better
  
• Memory: 4Mb RAM
  
• Sound Cards Supported: AdLib compatible cards, SoundBlaster compatible cards and the Roland LAPC-1.

No maximum requirements!!

Linux Requirements

No minimum requirements!!
No maximum requirements!!

Mac Requirements

No minimum requirements!!
No maximum requirements!!

You are in control of X-COM: an organization formed by the world's governments to fight the ever-increasing alien menace.

You are in control of X-COM: an organization formed by the world's governments to fight the ever-increasing alien menace.
Features:

• Command deadly close-combat battles
  Shooting down UFOs is just the beginning: you must then lead a squad of heavily-armed soldiers across different terrains as they investigate the UFO crash site. Tackle the aliens with automatic rifles, rocket launchers, and even tanks in the struggle to retrieve useful technology, weapons or life forms.
  
• Research and manufacture alien technologies
  Successful ground assault missions will allow X-COM scientists to analyze alien items. Each new breakthrough brings you a little closer to understanding the technology and culture of the alien races. Once you have sufficient research data on the UFO's superior weapons and crafts, you'll be able to manufacture weapons of equal capability.
  
• Develop a strategy to save the Earth
  You must make every crucial decision as you combat the powerful alien forces. But you'll also need to watch the world political situation: governments may be forced into secret pacts with the aliens and then begin to reduce X-COM funding.

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