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 Use these to try the latest features or check if a bug is obsolete. Do not install these on top of 1.0!

Windows Mac OS X Linux

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, Tue Dec 21 11:39:06 2021
fix for previous fix, accounting for 3d explosions

Warboy1982, Mon Dec 20 15:18:28 2021
parental advisory: contains explicit code

Warboy1982, Mon Dec 20 15:03:07 2021
fix ground zero tile calculation

Meridian, Wed Nov 24 19:38:50 2021
Norwegian name file update

Inge is a male name in Norwegian
Quisling is not used anymore

Meridian, Tue Nov 23 19:30:37 2021
Fix soldier stats display when walking/shooting

SupSuper, Mon Sep 20 07:40:14 2021
Fix deprecated loftemps

Yankes, Sun Sep 5 18:06:51 2021
Avoid `BattlescapeGame` in `DebriefingState`

Yankes, Sun Sep 5 16:32:15 2021
Make tile field sizes save as `char` to match load

SupSuper, Wed Sep 1 07:08:39 2021
Workaround yaml-cpp bug

SupSuper, Tue Aug 31 10:52:19 2021
Don't let the funding nations take money from X-COM

(too realistic)

SupSuper, Fri Jun 11 16:18:18 2021
Only initialize language after auto-detection

SupSuper, Tue Jun 8 10:43:20 2021
Fix pre-equip not working in crash sites

Yankes, Mon May 17 00:09:32 2021
Fix bug that allow avoiding reaction shoots

Mac OS X
Maintained by Various

Check here for app builds.

Maintained by Krzysztof “Knapsu” Knapik

Download AppImage file, make it executable, and run. No need to install.
You can read more about the AppImage format here:

DateGit CommitDownloads
2021-06-11 8d45159bf 64-bit 32-bit
2021-06-08 f3eea81ed 64-bit 32-bit
2021-05-27 390ed6866 64-bit 32-bit
2021-05-16 765d67dfe 64-bit 32-bit
2021-05-13 eacdad08e 64-bit 32-bit