Zerg Hive Mind

Unit	Requirements	Comments
Overlord	Hatchery	The food source and transport unit of the Zerg. You can really never have too many of these.
Drone	Hatchery	The Zerg equivalent to the Terran SCV. It gathers, it builds. When it is done building, the drone is lost; it has become part of the building.
Zergling	Hatchery, Spawning Pool	With DNA so simple and basic, two zerglings are produced in every egg. Not very dangerous by themselves, but be wary of groups.
Hydrlisk	Hatchery, Spawning Pool, Hydralisk den	A basic unit of the Zerg ground force, groups of Hydralisks are very effecteve against Terran forces. It spits a deadly poison, Hydralisks can attack ground or air.
Mutalisk	Hatchery, Spawning Pool, Upgrade to lair, Spire	An air unit of the Zerg race, although they shoot spines like the Hydralisk there is a difference. Mutalisks are effective against all races including Zerg itself.
Scourge	Hatchery, Spawning Pool, Upgrade to Lair, Spire	A flyer of the Zerg race that is very deadly to other air units, it attacks by destroying itself. Since they are so small you get two in every egg.
Queen	Hatchery, Spawning Pool, Upgrade to Lair, Queens nest	This unit cannot attack but is very useful in ways-it can parasite other units, it can make units into broodlings, and it can infest Command Centers.
Ultralisk	Hatchery, Spawning Pool, Upgrade to Lair, Queens nest, Upgrade to Hive, Ultralisk Cavern	Slow but strong, the Ultralist is a short range but very dangerous foe. He attacks with his large tusks, and does considerable damage.
Defiler	Hatchery, Spawning Pool, Upgrade to Lair, Queens nest, Upgrade to Hive, Defiler Mound	An elusive unit, the Defiler is a mysterious creature. Using dark swarm it can protect its friends, and cast a plague on its enemies.
Guardian	Hatchery, Spawning Pool, Upgrade to Lair, Queens nest, Upgrade to Hive, Greater Spire	Although it cannot attack air, the Guardian is the most powerful and destructive offensive unit. A dozen of these can level installations very quickly.
Infested Terran	Hatchery, Spawning Pool, Upgrade to Lair, Queens nest, Infested Terran Command Centre	Once infested, these Terrans fall under the will of the overmind, strap bombs to their bodies, and make kamikaze runs at their targets.