Category:Alien Structures
Alien Bases and Caches, including the biomes housing them.
Subcategories
This category has the following 4 subcategories, out of 4 total.
A
- Alien Arch (13 P)
- Alien Cache (3 P)
- Alien Vents (7 P)
P
- Primary Containment Facility (53 P)
Pages in category "Alien Structures"
The following 17 pages are in this category, out of 17 total.