# OpenXcom _OpenXcom is an open-source clone of the original UFO: Enemy Unknown (X-Com: UFO Defense in USA)._ - Home: https://openxcom.org/ - Wikipedia: - Download: https://openxcom.org/downloads-milestones/ - State: mature - Keywords: TBS - Code: https://github.com/SupSuper/OpenXcom/ - Language(s): C++ - License: GPL-3.0 OpenXcom requires a vanilla version of the original UFO: Enemy Unknown / X-COM: UFO Defense (any edition) with the latest patch. ## Building Uses CMake