This download is a self extracting installer including all you need to host and play Exterminatus - Rival Species 2. Three Species: Imperium, Tyranids and Chaos. Eighteen distinct classes, each with their own weapons. Eleven maps from the 41st millennium, each with their own missions and objectives. Extermaintus RC 1 incorporates all the developments done in Alpha since the Beta 9 version of Exterminatus back in January 2018.