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 Use these to try the latest features or check if a bug is obsolete.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:

Yankes, Sun Feb 25 15:15:58 2024
Reject invalid command line parameters

Yankes, Sun Feb 25 15:22:55 2024
Add command line option for version

Yankes, Sun Feb 25 15:30:12 2024
Remove console spam when detecting tools

Yankes, Wed Feb 21 23:41:07 2024
Fix handling of command line options

SupSuper, Fri Dec 29 15:21:30 2023
Fix ufopaedia scrolling on multi-line article titles

SupSuper, Wed Dec 27 12:42:04 2023
Add script to convert YAML language files to NSIS installer format

Meridian, Sun Dec 3 09:59:37 2023
Folders UI (in Options) (#1426)

* Folders UI (in Options)

* Use Unicode::convWcToMb

SupSuper, Fri Nov 24 03:07:06 2023
Alien Sub Construction needs item

Joy Narical, Sat Sep 9 14:08:51 2023
Fix bug with all units' voxels flipped relative to Y axis (#1423)

* Fix bug with all units' voxels flipped relative Y axis

Center of inverted unit become (7,8) and Volutar deducted that empirically and made dirty fix in commit#757d674 which (fix, not the whole commit) can now be reverted. Big units loftemps loading logic was inverted too, and I've added quick workaround to not break anything

SupSuper, Fri Sep 1 23:36:07 2023
Fix move path

SupSuper, Fri Sep 1 14:01:01 2023
Generate nightly ZIPs and installer

SupSuper, Wed Aug 30 09:17:12 2023
Fix env filenames

SupSuper, Wed Aug 30 07:43:42 2023
Fix branch name

SupSuper, Wed Aug 30 07:10:44 2023
Use tx Windows client

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