In pr0game there are various buildings, including supply buildings and facilities. They represent the infrastructure of a planet. The construction time of buildings can be reduced by upgrading the Robot Factory and Nanite Factory.
Buildings cannot be destroyed in an Attack or Raid, unlike defense facilities. However, all buildings except the Moon Base and the Terraformer can be demolished.
Construction time in hours = [(Crystal + Metal) / (2500 * (1 + Robot Factory level))] * 0.5 ^ Nanite Factory level
A list of all buildings: