Grey Goo [Online Game Code] Find the faction that fits your play styleand master it by taking on the AI or the Grey Goo community. Experience the conflict on Ecosystem 9 up close and personal in the single-player campaign. Deliver devastating blows by constructing game-ending Epic units. Join the fray on Steam or take the battle offline via Local Area Network play. The New Definitive Edition includes all previously released DLC, the "Shroud" playable race, and the compete Grey Goo soundtrack.