🕶️ A view of its UI showing a futuristic city with buildings, roads, covered walkways connecting the buildings and huge, dark, sad buildings in some places. At the bottom center, the game's control interface, with several tabs. 📚️ X-COM: Apocalypse is a turn-based strategy game (3rd opus, released in 1997) with real-time combat options, 3rd part of the X-COM series. It takes place in 2084, 40 years after the 2nd, in MegaPrimus, a megalopolis built on the ruins of Toronto. Dimensional portals appearing above MegaPrimus are the access point of a new alien race... OpenApoc is a libre and multi-platform compatible and improved engine (support of modern hardware, modding, removal of limitations, ...).