OpenXcom requires a vanilla version of the original UFO: Enemy Unknown / X-COM: UFO Defense (any edition) with the latest patch. It is not compatible with other games in the X-COM series. If you don’t own a copy, you can buy it from one of these retailers.

Do not use modded versions of X-COM, as they may be incompatible with OpenXcom.

Check the Installation documentation for more details.



These builds are automatically generated from the codebase, so they have the latest fixes and updates as well as the latest bugs. Use these if you wanna live on the bleeding edge or to check if a bug is obsolete. Do not install these on top of 1.0!

Windows Mac OS X Ubuntu / Mint

Maintained by SupSuper

The EXE version has an installer while the ZIP version is standalone. For more details see the FAQ. Latest version is at the top and includes all previous versions:

Warboy1982, Fri May 26 09:09:45 2017
Merge pull request #1147 from MeridianOXC/inventory-fix

Fix fitting items into inventory slots
Meridian, Thu May 25 14:40:29 2017
Fix fitting items into inventory slots

warboy1982, Wed May 24 19:08:17 2017
allow custom audio tracks to overlay FLI/FLC videos

save modders having to figure out how to encode audio into these archaic
formats, it's bad enough as it is.

SupSuper, Sun May 21 18:10:02 2017
Fix T'Leth mission names in New Battle

SupSuper, Sat May 20 04:21:38 2017
Fix the infamous Yogscast bug: Crash when winning TFTD via an explosion while playing in Ironman mode.

SupSuper, Sat May 20 04:19:29 2017
Fix battle auto-ending incorrectly when the goal *isn't* killing all the aliens

SupSuper, Thu May 18 00:31:44 2017
New debug feature - Ctrl-W to warp selected unit

Mac OS X
Maintained by grrussel

Check this website for more details.

Ubuntu / Mint
Maintained by Krzysztof “Knapsu” Knapik

Available on a dedicated PPA repository. Please do the following in a terminal:

# sudo add-apt-repository ppa:knapsu/openxcom-beta
# sudo apt-get update
# sudo apt-get install openxcom