Click the ground to place. Pieces snap to the 4 m grid with the same support rules players build under: foundations first, walls on floors, ceilings on walls, doors in doorways. Sloped walls rise toward the half of the edge you aim at; torches mount on walls. NPC markers become town residents when the building is stamped into a town (ignored in the wilderness). R rotates ramps/roofs/stations/NPCs. Right-click removes anything (or toggle ✕ Erase / E). Drag to orbit, wheel to zoom.

In towns these stand protected. In the open world players can salvage them for half the materials, or claim them whole by raising a territory statue beside them.