To build a base, players must gain structure components—such as floors, doors and windows—which are earned as they progress and gain levels. These components can be crafted, and placed in the world. Players can create any structure, as long as they have the logistics and resources; the structural integrity of the building is compromised when the pillars and foundations are destroyed. Players can also craft items in the game, such as weapons, which can be achieved by collecting the resources and technology required for crafting. In addition, players can craft and attach accessories to their weapons, such as a scope or flashlight for a pistol or machine gun. Should players take damage, their health meter will gradually regenerate if they have consumed the necessary food, or if they craft items that regenerate the health meter at a faster pace.