OpenXcom requires a vanilla version of the original UFO: Enemy Unknown / X-COM: UFO Defense. It is not compatible with other games in the X-COM series. If you don’t own a copy, you can acquire one from Steam or Amazon.
Do not use modded versions of X-COM, as they may be incompatible with OpenXcom. Check the Installation documentation for more details.
Stable buildsNightly buildsExtras
You can grab the latest stable releases here, just choose your platform and read the Installation instructions. Different platforms are maintained by different people, so some downloads may not have the latest changes.
Current Stable Version: 0.9 · May 7, 2013 · Changelog
Windows
Mac OS X
Ubuntu / DebianDEB packages for Debian based distributions can be downloaded from http://knapsu.eu/openxcom/
Ubuntu users can use a dedicated PPA repository. Please do the following in a terminal:
# sudo add-apt-repository ppa:knapsu/openxcom
# sudo apt-get update
# sudo apt-get install openxcom
openSUSEIn order to install in openSUSE do the following in a terminal:
# zypper -ar http://download.opensuse.org/repositories/home:/tzotsos/openSUSE_12.2/ home_tzotsos
# zypper refresh
# zypper install openxcom
Alternatively you can use the One-Click installer: http://software.opensuse.org/package/openxcom
OpenBSDIn order to install in OpenBSD 5.0+ use the pkg_add command.
HaikuCheck this website for more details.
ArchLinuxCheck this website for more details.
GentooAn OpenXcom ebuild is available in the gamerlay overlay, you can get it through layman -a gamerlay.
PandoraCheck this website for more details.
FreeBSDCheck this website for more details.
Dingoo A230 (out-of-date)
Old version from 05/02/2012. Check this website for more details.
OthersOpenXcom is cross-platform, so if you don’t see a build for your specific platform, you can just try to compile it yourself. And if you succeed, send us your build/package/etc so we can add it here for everyone to use!