This download is a self extracting installer 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 8 brings Exterminatus up to date with the latest (2013) version of the source game engine, numerous balance improvements, particularly for the Terminator class.