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. Ten maps from the 41st millennium, each with their own missions and objectives. Alpha 8.70 rolls up all the changes from the last 10 alpha tests, adds more chaos props, new kill icons, further improves ex_bunker and fixes bugs related to objective markers and bullet holes.