The Shroud Nebula is the battleground of the game Galaxy on Fire Alliances. Containing a countless number of star systems, each with a number of planets awaiting exploitation, the Shroud Nebula is a previously inaccessable region of space rich with metal, gas, and crystals. In addition to that, there are also some planets with mysterious spire-like, rock-like structures called citadels where strange artifacts can be recovered that can enhance ship carriers.