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 Use these to try the latest features or check if a bug is obsolete.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

Daniel, Sat Aug 12 18:50:39 2017
Merge pull request #1162 from MeridianOXC/interface-codes-cleanup

Cleanup - unique interface codes
Meridian, Fri Aug 11 15:46:56 2017
Cleanup - unique interface codes

SupSuper, Fri Aug 11 02:03:29 2017
Fix base inventory so 2x2 soldiers are accessible as well

SupSuper, Fri Aug 11 01:26:27 2017
Fix modders not being able to enable unit inventories

Warboy1982, Thu Aug 10 10:15:11 2017
Merge pull request #1161 from MeridianOXC/fix-var-init

Fix variable initialization
Meridian, Sat Aug 5 16:23:29 2017
Fix variable initialization,5630.0.html

Daniel, Tue Aug 1 00:05:38 2017
Merge pull request #1159 from MeridianOXC/better-errmsg

Better error message for players/modders on texture NPE
Meridian, Sun Jul 30 16:41:25 2017
Better error message for players/modders on texture NPE

Daniel, Tue Aug 1 00:04:34 2017
Merge pull request #1160 from myk002/fix_fixed

fix behavior of fixed weapons in inventory screen
Myk, Mon Jul 31 15:50:04 2017
clean up for loop

Myk, Sun Jul 30 17:13:35 2017
fix behavior of fixed weapons in inventory screen

ensure fixed weapons can't be removed/added by ctrl-clicking or via
inventory template operations

Mac OS X
Maintained by Various

Check here for binary builds or 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
2017-08-12 f877b16a2 64-bit 32-bit
2017-08-11 3c2b453e5 64-bit 32-bit
2017-08-10 fa0ae9dcd 64-bit 32-bit
2017-08-01 26d7671e1 64-bit 32-bit
2017-07-18 6cc32bcdc 64-bit 32-bit
2017-07-16 aacaf563e 64-bit 32-bit
2017-07-13 7127fad42 64-bit 32-bit
2017-07-11 8fb1cb90b 64-bit 32-bit

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