Building

Buildings are structures built by the player or aliens. There are multiple types of buildings found in Planet X2 and Planet X3.

In Planet X2
Buildings can be constructed by using the Builder unit. Buildings have a set amount of health that when depleted will cause the building to be destroyed.

Factory
Factories are used to store resources as well as create units such as the builder and the tank. If all the player's factories are destroyed the player loses the game.