◢ Buildings: Individual purpose-built structures.

◢ Colonies: Inhabited settlements on planets, moons, or asteroids capable of limited or full self-sufficiency

◢ Furniture: Interior decorations including opportunity for cover or ambush …

◢ Installations: Structures emplaced to provide untended or automatic operations such as weather tracking stations.

◢ Networks: Many structures coordinating form a structural network such as command and control systems.

◢ Outposts: Smaller inhabited settlements sustained by frequent resupply, such as temporary worksites or initial colony projects intended to grow to self-sufficiency over time.

◢ Satellites: Orbiting untended or automatic installations.

◢ Stations: Orbital outpost or colony structures.

◢ Traps: Hazardous defensive structures frequently found in the salvage derelicts.

▲ Chronology