The zerg spawning pool is a pit of primordial ooze in which is contained the genetic makeup of the zergling.^[1]

Contents 1 Game Structure 1.1 StarCraft 1.1.1 Researched Upgrades 1.2 StarCraft II 1.2.1 Researched Upgrades 1.2.2 Development 2 References

Game StructureEdit

StarCraftEdit

Spawning Pool
Structure
Race	Zerg
Production
Minerals	200
Build time	80
Evolves from	Drone
Requires	Hatchery
Hotkey	S
Protection
Hit points	750
Armor	1
Function
Allows	Zergling Sunken colony Hydralisk den Lair
Research	Metabolic Boost Adrenal Glands

The spawning pool gives larvae the ability to morph into zerglings and the hatchery the ability to evolve into the lair. The spawning pool is also responsible for evolving the zergling with Metabolic Boost (faster movement) and Adrenal Glands (faster attack).^[1]

Researched UpgradesEdit

Metabolic Boost
Evolved at	Spawning pool
Hotkey	M
Properties
Minerals 100 Gas 100 Evolution time 100
Notes
Increases zergling speed.

Adrenal Glands
Evolved at	Spawning pool
Hotkey	A
Properties
Minerals 200 Gas 200 Evolution time 100 Required Hive
Notes
Increases the attack rate of zerglings by 20%.

StarCraft IIEdit

Spawning Pool
Structure
Race	Zerg
Properties
Broodlings produced	6
Production
Minerals	200
Build time	65
Evolves from	Drone
Requires	Hatchery
Hotkey	S
Protection
Hit points	1000
Armor	1
Type	Armored Biological Structure
Function
Allows	Zergling Spine crawler Queen Roach warren Baneling nest Lair
Research	See below

The spawning pool reappears in StarCraft II.

Researched UpgradesEdit

Metabolic Boost
Campaign	Heart of the Swarm
Cost	1 mutagen point[2]
Evolved at	Spawning pool
Hotkey	M
Properties
Minerals 100 Gas 100 Evolution time 110
Notes
Increases zergling movement speed. The zerglings "grow wings".
Edit

Adrenal Glands
Evolved at	Spawning pool
Hotkey	A
Properties
Minerals 200 Gas 200 Evolution time 130 Required Hive
Notes
Increases zergling attack rate by 20%.
Edit

DevelopmentEdit

The spawning pool was visually updated during the first pass of creating final artwork for StarCraft II. The main difference was artistic direction asking for a single large pool rather than the numerous smaller pools seen in the original game. The beating heart in the center was an afterthought to make the design more interesting. It was desired that the intestines have a more "veins pumping look" but the water obscured it too much for this to be implemented.^[3]

The research to unlock the ability for zerglings to morph into banelings was once possessed by the spawning pool.^[4]

ReferencesEdit

Zerg Units and Structures of StarCraft/Brood War
Ground units	Larva · Drone · Zergling · Hydralisk · Lurker(BW) · Defiler · Ultralisk
Air units	Overlord · Mutalisk · Guardian · Scourge · Queen • Devourer(BW)
Infestation units	Broodling · Infested terran
Transition units	Egg · Lurker egg · Cocoon
Basic buildings	Hatchery · Extractor · Evolution chamber · Spawning pool · Creep colony · Spore colony · Sunken colony · Hydralisk den
Advanced buildings	Lair · Hive · Spire · Greater spire · Queen's nest · Nydus canal · Defiler mound · Ultralisk cavern · Infested command center
Other	Creep
Scrapped	Mutation chamber · Nydus pit

Zerg Units and Structures of StarCraft II
Land units	Larva · Drone · Zergling · Baneling · Roach · Hydralisk · Infestor · Ultralisk · Queen · Swarm host (HotS)
Air units	Overlord · Overseer · Mutalisk · Brood lord · Corruptor · Viper (HotS)
Spawned units	Broodling · Changeling (WoL) · Infested terran · Locust (HotS)
Basic buildings	Hatchery · Creep tumor · Extractor · Evolution chamber · Spawning pool · Baneling nest · Roach warren
Combat Buildings	Spine crawler · Spore crawler
Advanced buildings	Lair · Hive · Infestation pit · Spire · Greater spire · Hydralisk den · Nydus network · Nydus worm · Ultralisk cavern
Transition units	Egg · Baneling cocoon · Brood lord cocoon · Infested swarm egg · Overseer cocoon
Others	Creep
Campaign-Exclusive Units	Ground units Aberration · Brutalisk · Infested colonist · Infested marine · Omegalisk · Pygalisk · Pygalisk cocoon · Swarmling Air units Leviathan · Sac · Scourge · Swarm guardian Variant units Zergling (Raptor · Swarmling) · Baneling (Gorgeling · Splitterling) · Roach (Leech · Prowler)
Campaign-Exclusive Structures	Infested terran buildings (infested bunker · infested command center) · Spore cannon · Virophage
Canceled Zerg Units and Structures of StarCraft II

Zerg Breeds
Command Strains	Cerebrate · Metamorph · Overlord · Overmind · Queen, original · Queen, new variant (brood mother) · Queen of Blades
Core Strains	Ground Larva · Feederling · Drone · Queen · Zergling · Baneling · Roach · Hydralisk · Lurker · Defiler · Swarm host · Infestor · Nydus worm · Ultralisk · Brutalisk Aerospace Overlord · Overseer · Mutalisk · Guardian · Scourge · Queen · Devourer · Corruptor · Brood lord · Leviathan · Behemoth
Specialist Strains	Ground Zergling (Devouring One · Goblin · Raptor · Screamer · Swarmling · War Zergling) · Baneling (Gorgeling · Kaboomer · Splitterling) · Roach (Leech · Prowler) · Hydralisk (Hunter Killer · Hydolysk · Warg) · Queen (Brood mother · Char Queen) · Infestor (Choker) · Ultralisk (Blade Guardian · Juggernaut · Omegalisk · Pygalisk · Stank · Torrasque) · Brutalisk (Hunterling) · Nydus worm (Left 2 Die Nydus worm) Aerospace Overlord (Brain spectre · Mastermind · Yggdrasill) · Overseer (Spotter) · Mutalisk/Guardian (Drake · Evolved Mutalisk · Gargoyle · Kukulza · Feral Guardian) · Queen (Hand Maiden · Empress · Eschutriarch · Matriarch · Siren)
Spawned/Other	Broodling (Swarmling) · Changeling · Creep · Infested protoss · Locust · Parasite · Probe · Roverlisk · Sac · Swarm
Infested terrans	Aberration · Infested colonist · Infested marine · Explosive · Infestor-spawned · Mutate
Structures	Basic Hatchery · Creep tumor · Extractor · Evolution chamber · Spawning pool · Baneling nest · Eye · Creep colony · Spore colony · Sunken colony · Spine crawler · Spore crawler · Spore cannon · Hydralisk den Advanced Lair · Hive · Infestation pit · Spire · Greater spire · Queen's nest · Nydus canal · Nydus network · Defiler mound · Ultralisk cavern · Infested terran buildings (Infested command center · Infested bunker) · Virophage