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 8.78 features a new weapon combo for the chaos terminator. The chaos defence map ex-compromised has been fully textured. This version fixes several bugs from alpha 8.78. A handful of balance issues reported by players have been addressed.