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Cover can be anything that has the possibility to stop a fired bullet from hitting the intended target. Cover in RimWorld can be found in several forms. Some examples are: Rubble, Sandbags, Walls, the Saguaro cactus, and even animals.

High cover consists of any wall, constructed or otherwise, which a character can lean around to shoot enemies (if they're standing next to the wall). Any wall counts as high cover, and will stop bullets or other projectiles not just from hitting whoever is taking cover behind them, but prevent them from continuing on to hit anything else.
Low cover consists of sandbags, rock or slag chunks, trees, bushes, animals, some types of furniture and structures, and virtually anything else that a character can shoot over. Low cover does not provide as high a chance of stopping projectiles as high cover, but it's still far better than nothing, and it allows your colonists to shoot over it whereas a wall could block your shooters' line of sight to target completely. Natural cover is anything that can protect you on a newly generated map. Artificial cover is anything you build; even debris that you move could potentially count as artificial cover.

Contents: High Cover Low Cover other/unknown
Artificial Cover * Door
* Walls
* Sand Bags * Buildings
Natural Cover * Mountain walls
* Saguaro cactus
* Rubble
* Bushes
* Animals
* Darkness

See: complete list of objects that provide cover

Natural cover

Natural cover is anything that is generated when the map is created, and is almost everything you can find on a newly generated map.

Mountain walls

Mountains are a brown rock structure that you can mine into. The corners of the mountains are effective cover if the raiders come from the right angle. If they come from the wrong angle, though, they can easily become a death trap.

Mountain walls provide 75% cover.


Rubble, in the form of rock chunks and steel slag chunks, is littered all over the map and will be used by attackers to gain an advantage over you. You can also use rubble for protection, but the random rubble placement is unlikely to favor you, so it's advisable to use it as a last resort only.

Rubble, in combination with a dumping area, can provide a free alternative to sandbag emplacements in the early game when Metal is scarce. Here is how it works:

  • Create a Dumping zone in the desired shape. (Typically a 1 square thick wall)
  • Designate the desired amount of rubble to be hauled.
  • Wait for the rubble to be hauled.
  • Place Colonists behind the wall for cover during a firefight.

Rubble provides 40% cover.


Bushes provide 25% cover. In general, you'll want to avoid these -- especially as they can catch fire very easily. In a nighttime fight, burning cover will illuminate anyone standing behind it, painting them as targets for follow-up shots.

Saguaro cactus

It's a large tree-like cactus with 2 branches. See this page for a picture.


A last resort to cover if you have nothing else can be animals. By having animals between your colonist(s) and the attackers, they can actually work as a makeshift barricade by being hit instead of your colonists. Larger animals (eg. Muffalo) work better for this. However, you shouldn't rely on this, as animals tend to wander off at random. They can, however, become enraged and attack your enemies (or you) if fired upon long enough, so there may be something to it after all.


Darkness will not stop bullets (obviously), but it will increase the miss chance of anyone shooting at a target in darkness. When in a firefight, it helps to keep your colonists in the darkness while your enemies are in lighted areas. A good way to use darkness is to build bunker systems to provide your colonists with walled cover, plus a roof over their heads to keep out stormy weather and unwanted sunlight.

Darkness provides 15% cover.

Artificial cover

Artificial cover is anything that you can build. (In a sense, rock rubble could be counted as artificial cover after you have moved it, and are using it as cover.)


Sandbags are the easiest and cheapest method of protection, offering substantial survivability potential while maintaining maximum angles of fire -- great for turrets and any shooters that need to cover a wide area of approach. U-shapes are good for one character to hide in. Zigzag patterns will allow multiple characters to cover close together, which is handy if you want to focus fire on a few attackers.

Sandbags enclosing a turret make a great defensive hardpoint. But make sure to keep the turret repaired, as it will explode when destroyed and can damage nearby characters and structures. A good practice is to leave a 1 tile gap (or make it a hole with sandbags on the back of the tile too) in the back (most protected side) where a colonist can stand and repair the turret and still be mostly in cover, but be prepared to make the colonist run away when the sparks begin to fly from the turret...

Sandbags provide 65% cover.


Walls can be used as cover as well. Characters will lean around them to shoot. Three wall blocks placed diagonally make a great sniper nest. Natural walls work in the same way, and will almost always have more durability than any artificial wall.


A door can be used as a high cover if it stands alone so a colonist can lean around it.


Most things that you can build can also stop bullets, although they take damage and will eventually be destroyed, catch fire or explode, if not repaired in time.

Not Cover

To minimize confusion, see this page: Not Cover, for things that don't work as cover and you should stay away from during a fire fight.