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. Nineteen distinct classes, each with their own weapons. Thirteen maps from the 41st millennium, each with their own missions and objectives. Alpha 9.16 features an announcer system and updates to csm_trench, ex_bunker and ex_exchange.