Because aliens are attempting to invade the Earth, you will have to command X-com, an international organisation to fight the alien invasion. By shooting down UFO's and recovering informatio... Read allBecause aliens are attempting to invade the Earth, you will have to command X-com, an international organisation to fight the alien invasion. By shooting down UFO's and recovering information from the crash sites, you can research alien technology.Because aliens are attempting to invade the Earth, you will have to command X-com, an international organisation to fight the alien invasion. By shooting down UFO's and recovering information from the crash sites, you can research alien technology.