Set on the alien world of Ecosystem 9, the game revolves around the struggle between four distinct factions:
: A versatile alien race focusing on modular base construction. Grey Goo Definitive Edition Free Download
: A mobile, enigmatic life form that eschews traditional bases in favor of large, shifting "Mother Goos." Set on the alien world of Ecosystem 9,
: A three-mission mini-campaign following the hero unit Singleton. Grey Goo Definitive Edition Free Download