This download is a zip file including all you need to host and play Exterminatus - Rival Species 2. Two Species: Humans and Tyranids. Twelve distinct classes, each with their own weapons. Nine maps from the 41st millennium, each with their own missions and objectives. Beta 7.0 adds two new player classes, the Apothecary and Biovore. This zip file is for server operators an players who may have trouble with the self extracting installer.