Excreting organic pods that explodes and damages surrounding targets.
Cysts appear to be growths of the Corruption that serve to kill targets moving through its immediate vicinity. It is capable of excreting organic bombs that will explode violently upon impact. Though effective as area-denial defense, they are not capable of distinguishing between human hosts, inanimate objects and Necromorphs, and will eject their bomb should anything come within range, Necromorph or not.
The Pods that the Cyst ejects can be grabbed in air with Kinesis; The Pods can then be launched back at the Cyst, or any other object or Necromorph.
In Dead Space 3: Awakened, there is another variant of the Cyst encountered inside the CMS Terra Nova's power core. These Cysts are much larger than standard ones and are apparently indestructible. They don't seem to generate and spit out their bombs when the gravity inside the core is still on.
- One strategy is to turn your back to the Cyst when you have found it and slowly walk backwards to it. As soon as you hear it launch the mine, sprint straight forward to avoid the explosion. The Stasis Module can help with this.
- An alternate strategy is to just walk slowly towards the Cyst and when you hear it barely launch the Explosive Pod, run backwards at full speed and if you do it correctly, most of the time you'll be fine.
- Throwing any object at the Cyst with the Kinesis will cause The Cyst to throw out its projectile, usually killing itself if the object hasn't already.
- Another strategy is to slowly walk up to the Cyst and catch the mine with Kinesis. Once caught, you can throw it back to the Cyst which will kill it instantly.
The Cyst does not have a death scene of its own, but should Isaac/Gabe/Carver get hit by a cyst bomb explosion while low on health, he will be thrown backwards completely dismembered. If Isaac gets killed by a cyst bomb flying through Zero-G, he will be killed with his limbs and head popped off and flung away at great velocity.
They have a passing resemblance in appearance and function to the barnacles from the Half-Life franchise.
Cysts appear also outside of the CMS Terra Nova in Dead Space 3 and appear to be much, much larger than in Dead Space 2. The same thing is with the Lurkers encountered in space. Reason for this is unknown.