Technology Tree

Zerg Technology Tree - Basic Structures

	Hatchery	Requires: Nothing
	Extractor	Requires: Nothing
	Spawning Pool	Requires: Hatchery
	Evolution Chamber	Requires: Hatchery
	Creep Colony	Requires: Hatchery
	Sunken Colony	Mutated From: Creep Colony
	Spore Colony	Mutated From: Creep Colony
	Hydralisk Den	Requires: Spawning Pool

Zerg Technology Tree - Advanced Structures

	Lair	Mutated From: Hatchery
	Spire	Requires: Lair
	Greater Spire	Mutated From: Spire
	Queen's Nest	Requires: Lair
	Hive	Mutated From: Lair
	Nydus Canal	Requires: Hive
	Deflier Mound	Requires: Hive
	Ultralisk Cavern	Requires: Hive