Product
All kind of different structure products.
Food
All structures related to food and farming.
Pal
All structures related to Pals.
Defense
Defend yourself with those items against enemies.
Infrastructure
Build a good infrastructure with those structures.
Storage
Store your items and resources.
Foundation
Base of every house.
Light
Lamps and light for your buildings.
Furniture
Handmade furniture for your house.
Other
Other structures that have no category.