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 Use these if you wanna live on the bleeding edge or to check if a bug is obsolete.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, Mon Jan 16 12:21:38 2017
unify some explodeOnDeath stuff

Warboy1982, Mon Jan 16 10:22:14 2017
fix minimap stuff

SupSuper, Sun Jan 15 00:47:16 2017
Fix wordwrapping on East-Asian languages

Daniel, Fri Jan 13 20:40:55 2017
Merge pull request #1130 from MeridianOXC/base_stuff

Base stuff
Meridian, Fri Jan 13 18:24:54 2017
Safer access to _base variable

e.g. when aborting/losing base defense mission

Meridian, Fri Jan 13 18:23:02 2017
Don't give score for recovered aliens when a base is lost

Daniel, Mon Jan 9 23:09:09 2017
Merge pull request #1128 from yason/master

OpenBSD also requires linking with libexecinfo
Daniel, Mon Jan 9 23:09:00 2017
Merge pull request #1129 from MeridianOXC/fix_murderers

Fix murderer confusion
SupSuper, Mon Jan 9 22:53:36 2017
Fix warnings

Meridian, Mon Jan 9 17:33:13 2017
Fix murderer confusion

Signed-off-by: Meridian

Kirill Bychkov, Thu Dec 15 10:35:20 2016
Add OpenGL include dirs.

Kirill Bychkov, Thu Dec 15 10:26:57 2016
OpenBSD also requires linking with libexecinfo

SupSuper, Sun Jan 8 17:21:28 2017
Fix translations not working due to change in Transifex format

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