Hatchery

The Zerg Hatchery is the focal point of every starting Zerg colony. It performs two vital functions that no colony could survive without: producing Creep (which all Zerg structures require in order to be built) and producing Larva that can evolve into the various Zerg breeds. In addition, the Hatchery, (except for the Extractor) is one of the only structures that can be built without pre-existing Creep and is therefore essential for any expansion attempt.