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 8.71 adds a new Chaos defence map called Compromised made by WhiteLightningTwister. Work has started on getting the spacemarine scout and chaos weapon models in-game. A number of tweaks and fixes have been made to ex_bunker. ex_convoy by WhiteLightningTwister is back as a Tyranid defence map.