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. Alpha 8.72 features custom wargear for the chaos Renegade class and Bulwark's custom Kill taunts for the chaos space marines.