|Version Introduced||Alpha 1|
Floor segments can be constructed using either the room tool or the floor tool. Any group of floor tiles not separated by walls or empty space merge to form a single zone.
Almost all Objects must be built upon enough empty floor tiles to fit their footprint.
Hovering your mouse over a room's floor will show its oxygen level. Selecting a floor with the inspect tool will allow you to rezone the room type, seal the room's O2, or rename the room.