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. Nine maps from the 41st millennium, each with their own missions and objectives. Alpha 8.61 features a new Chaos Space Marine (CSM) team, which is a major change in direction for EX. Also featured in this Alpha a new level ex_street