Cystoid

Cystoid is hostile Typhon encountered on Talos-1 during Prey (2017).

Overview
Cystoids are the smallest Typhon creatures that players encounter in Prey, but their size can be deceptively disarming. About the size of a softball, these creatures make up for their diminutive size with some explosive firepower, and these little firecrackers tend to travel in packs and live in Cystoid Nests. Cystoids aren’t deep thinkers, so the second they sense movement, they take off on a Kamikaze mission that ends in a tiny explosion.

Design
Cystoid looks like a small, black ball with spikes on it.

Strategy
Cystoids kill themselves when they explode, so as long as players are aware of their surroundings, they can easily deal with these nests by tossing a random object in their direction.