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. Alpha 8.19 includes updates to ex_forge, new mecanicus decals from DontAsk, soundscape tweaks and melee weapon sound fixes.