Xenowar

Xenowar - free for download game

To cite it's creators website, Xenowar is a "turn based tactical alien blasting game for Android and the PC". Best of all, Xenowar is heavily inspired by the X-COM (UFO: Defense/UFO: Enemy Unknown/Laser Aquad) classics, in a very similar manner as UFO: Alien Invasion. And it's available for free download! Don't hesitate.
DOWNLOAD XENOWAR FOR FREE