An evolution chamber

The evolution chamber is a type of zerg structure.

Overview[edit | edit source]

The interior of an evolution chamber

The evolution chamber is the result of the Overmind's view that complacency is the road to defeat, causing it to spur zerg evolution constantly. The evolution chamber provides a testing ground for the genetic code of lesser breeds, helping to increase the offensive and defensive capabilities of the zerg ground-based breeds. It is also required in order for a creep colony to mutate into a spore colony.[1]

The base of the evolution chamber forms from the genetic template of an unknown creature. During development, the "chamber" grows around a full skeleton with a skull, spinal column and ribs, that falls apart when the pit is destroyed. The biological roots of this creature is still unknown to terran scientists.

The evolution chamber contains a hardened skin that grants it near immunity to small arms fire, though can still be destroyed through mass C-14 rifle fire. In addition, it possesses genetic transmission appendages that allow it to transmit genetic information to other structures of the hive cluster.[2]

Evolution chambers possess hyperadaptive tendencies, which made control difficult by the Cerberus Program. This was circumvented in their broods by pumping the arteries of the chamber full of command pheromones.[3]

The evolution chamber, in the form of the evolution pit, is also found within leviathans.[4]

Game Structure[edit | edit source]

StarCraft[edit | edit source]

Researched Upgrades[edit | edit source]

Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals 100 Vespene gas 266seconds
Required Hatchery
Level 2
Cost 150 Minerals 150 Vespene gas 298seconds
Required Lair
Level 3
Cost 200 Minerals 200 Vespene gas 330seconds
Required Hive
  • +1 bonus to attack damage per level for hydralisks
  • +2 bonus to attack damage per level for lurkers
Acquisition
Purchased from Evolution chamber
Hotkey A
Level 1
Cost 100 Minerals 100 Vespene gas 266seconds
Required Hatchery
Level 2
Cost 150 Minerals 150 Vespene gas 298seconds
Required Lair
Level 3
Cost 200 Minerals 200 Vespene gas 330seconds
Required Hive
Acquisition
Purchased from Evolution chamber
Hotkey C
Level 1
Cost 150 Minerals 150 Vespene gas 266seconds
Level 2
Cost 225 Minerals 225 Vespene gas 298seconds
Required Lair
Level 3
Cost 300 Minerals 300 Vespene gas 330seconds
Required Hive

Development[edit | edit source]

The following section contains information from a previous version of StarCraft which is no longer valid.

Unlike its alpha appearance, the evolution chamber's sprite in the StarCraft beta was mostly identical to its end version, though had a distinctly more withered appearance.[5][6] In earlier builds of the beta, the evolution chamber's sprite was used for the spore colony[7] and then the fungal colony[8] before ultimately becoming the evolution chamber. In the release version, it retains the placeholder name "cerebrate."[9]

StarCraft II[edit | edit source]

The evolution chamber appears in StarCraft II. When attacked and destroyed it appears to have a basic skeleton structure that falls out; containing a head, spinal column, and ribs.

Researched Upgrades[edit | edit source]

Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals 100 Vespene gas 114seconds
Level 2
Cost 150 Minerals 150 Vespene gas 136seconds
Required Lair
Level 3
Cost 200 Minerals 200 Vespene gas 157seconds
Required Hive
ve
  • Attack bonus for queens and zerg ground ranged units.
Acquisition
Purchased from Evolution chamber
Hotkey A
Level 1
Cost 100 Minerals 100 Vespene gas 114seconds
Level 2
Cost 150 Minerals 150 Vespene gas 136seconds
Required Lair
Level 3
Cost 200 Minerals 200 Vespene gas 157seconds
Required Hive
ve
  • +1 bonus to armor per level for zerg ground units.
Acquisition
Purchased from Evolution chamber
Hotkey C
Level 1
Cost 150 Minerals 150 Vespene gas 114seconds
Level 2
Cost 225 Minerals 225 Vespene gas 136seconds
Required Lair
Level 3
Cost 300 Minerals 300 Vespene gas 157seconds
Required Hive
ve

Heart of the Swarm[edit | edit source]

Main article: Evolution pit

The evolution chamber, in the form of an evolution pit, appears as its own environment in Heart of the Swarm. Zerg evolution is driven here in regards to upgrades and unit choices.[4]

Co-op Missions[edit | edit source]

Kerrigan, Zagara and Abathur can unlock various upgrades at the evolution chamber. Zagara and Kerrigan upgrade themselves, Zagara also has aberration upgrades, and Abathur researches swarm queen upgrades. Zaraga's evolution chamber upgrades all her ground units with one upgrade. Stetmann uses a variant of the structure named the mecha evolution chamber.

Kerrigan Upgrades[edit | edit source]
SC2 ZergMeleeWeap.gif
Zerg Melee Attacks

Increases the attack damage of zerg ground melee units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals

Mastery: -2 Minerals per Expeditious Evolutions mastery point. Down to a minimum 40 Minerals
100 ZergVespene SC2 Game1.png
Mastery: -2 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 40 Vespene gas
160seconds

Mastery: -3.2seconds per Expeditious Evolutions mastery point. Down to a minimum 64seconds
Level 2
Cost 150 Minerals

Mastery: -3 Minerals per Expeditious Evolutions mastery point. Down to a minimum 60 Minerals
150 ZergVespene SC2 Game1.png
Mastery: -3 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 60 Vespene gas
190seconds

Mastery: -3.8seconds per Expeditious Evolutions mastery point. Down to a minimum 76seconds
Required Lair/Hive
Level 3
Cost 200 Minerals

Mastery: -4 Minerals per Expeditious Evolutions mastery point. Down to a minimum 80 Minerals
200 ZergVespene SC2 Game1.png
Mastery: -4 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 80 Vespene gas
220seconds

Mastery: -4.4seconds per Expeditious Evolutions mastery point. Down to a minimum 88seconds
Required Hive
ve
SC2 ZergMissileWeap.gif
Zerg Missile Attacks

Increases the attack damage of zerg ground ranged units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals

Mastery: -2 Minerals per Expeditious Evolutions mastery point. Down to a minimum 40 Minerals

100 ZergVespene SC2 Game1.png
Mastery: -2 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 40 Vespene gas

160seconds

Mastery: -3.2seconds per Expeditious Evolutions mastery point. Down to a minimum 64seconds
Level 2
Cost 150 Minerals

Mastery: -3 Minerals per Expeditious Evolutions mastery point. Down to a minimum 60 Minerals

150 ZergVespene SC2 Game1.png
Mastery: -3 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 60 Vespene gas

190seconds

Mastery: -3.8seconds per Expeditious Evolutions mastery point. Down to a minimum 76seconds
Required Lair/Hive
Level 3
Cost 200 Minerals

Mastery: -4 Minerals per Expeditious Evolutions mastery point. Down to a minimum 80 Minerals

200 ZergVespene SC2 Game1.png
Mastery: -4 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 80 Vespene gas

220seconds

Mastery: -4.4seconds per Expeditious Evolutions mastery point. Down to a minimum 88seconds
Required Hive
ve
SC2 ZergGrndCara.gif
Zerg Ground Carapace

Increases the armor of zerg ground units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals

Mastery: -2 Minerals per Expeditious Evolutions mastery point. Down to a minimum 40 Minerals
100 ZergVespene SC2 Game1.png
Mastery: -2 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 40 Vespene gas
160seconds

Mastery: -3.2seconds per Expeditious Evolutions mastery point. Down to a minimum 64seconds
Level 2
Cost 175 Minerals

Mastery: -3.5 Minerals per Expeditious Evolutions mastery point. Down to a minimum 70 Minerals
175 ZergVespene SC2 Game1.png
Mastery: -3.5 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 70 Vespene gas
190seconds

Mastery: -3.8seconds per Expeditious Evolutions mastery point. Down to a minimum 76seconds
Required Lair/Hive
Level 3
Cost 250 Minerals

Mastery: -5 Minerals per Expeditious Evolutions mastery point. Down to a minimum 100 Minerals
250 ZergVespene SC2 Game1.png
Mastery: -5 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 100 Vespene gas
220seconds

Mastery: -4.4seconds per Expeditious Evolutions mastery point. Down to a minimum 88seconds
Required Hive
ve
SC2 KerrHeroicFortitude Icon.jpg
Heroic Fortitude

Increases Kerrigan's maximum HP by 200 and life regeneration by 100%.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey F
Cost 100 Minerals

Mastery: -2 Minerals per Expeditious Evolutions mastery point. Down to a minimum 40 Minerals
100 ZergVespene SC2 Game1.png
Mastery: -2 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 40 Vespene gas
60seconds

Mastery: -1.2seconds per Expeditious Evolutions mastery point. Down to a minimum 24seconds
ve
SC2 KerrAbilityEfficiency Icon.jpg
Ability Efficiency

Reduces the energy cost and cooldown of Kerrigan's abilities by 20%.

Usage
Passive
Campaign Acquisition
Unlock Reach Kerrigan Level 9
Acquisition
Purchased from Evolution chamber
Hotkey E
Cost 200 Minerals

Mastery: -4 Minerals per Expeditious Evolutions mastery point. Down to a minimum 80 Minerals
200 ZergVespene SC2 Game1.png
Mastery: -4 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 80 Vespene gas
120seconds

Mastery: -2.4seconds per Expeditious Evolutions mastery point. Down to a minimum 48seconds
Required Hive
ve
SC2 ChainReaction Icon.jpg
Chain Reaction

Kerrigan attacks bounce to subsequent enemies, dealing 10 damage to up to four more targets.

Usage
Passive
Campaign Acquisition
Unlock Reach Kerrigan Level 9
Acquisition
Purchased from Evolution chamber
Hotkey R
Cost 150 Minerals

Mastery: -3 Minerals per Expeditious Evolutions mastery point. Down to a minimum 60 Minerals
150 ZergVespene SC2 Game1.png
Mastery: -3 ZergVespene SC2 Game1.png per Expeditious Evolutions mastery point. Down to a minimum 60 Vespene gas
90seconds

Mastery: -1.8seconds per Expeditious Evolutions mastery point. Down to a minimum 36seconds
Required Lair/Hive
ve
Zagara Upgrades[edit | edit source]
SC2 ZergMeleeWeap.gif
Zerg Ground Attacks

Increases the attack damage of zerg ground units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Level 2
Cost 150 Minerals 150 Vespene gas 190seconds
Required Lair/Hive
Level 3
Cost 200 Minerals 200 Vespene gas 220seconds
Required Hive
ve
SC2 ZergGrndCara.gif
Zerg Ground Carapace

Increases the armor of zerg ground units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Level 2
Cost 175 Minerals 175 Vespene gas 190seconds
Required Lair/Hive
Level 3
Cost 250 Minerals 250 Vespene gas 220seconds
Required Hive
ve
SC2 KerrHeroicFortitude Icon.jpg
Heroic Fortitude

Increases Zagara's maximum HP by 200 and life regeneration by 100%.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey F
Cost 100 Minerals 100 Vespene gas 60seconds
ve
SC2 HotSGroovedSpines Icon.jpg
Medusa Blades

Zagara's attacks deal area damage, splashing to enemy units near her primary target.

Usage
Passive
Campaign Acquisition
Unlock Reach Zagara Level 9
Acquisition
Purchased from Evolution chamber
Hotkey D
Cost 150 Minerals 150 Vespene gas 90seconds
Required Lair/Hive
ve
ProtectiveCover SC2 Icon.jpg
Protective Cover

Aberrations reduce damage done to units beneath them by 50%.

Usage
Passive
Campaign Acquisition
Unlock Reach Zagara Level 9
Acquisition
Purchased from Evolution chamber
Hotkey B
Cost 150 Minerals 150 Vespene gas 90seconds
Required Lair/Hive
ve
Abathur Upgrades[edit | edit source]
SC2 ZergMissileWeap.gif
Zerg Missile Attacks

Increases the attack damage of zerg ground ranged units.

(Also affects Broodlings)

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals

100 Vespene gas
160seconds

Mastery: -3.2seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 64seconds
Level 2
Cost 150 Minerals

150 Vespene gas
190seconds

Mastery: -3.8seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 76seconds
Required Lair/Hive
Level 3
Cost 200 Minerals

200 Vespene gas
220seconds

Mastery: -4.4seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 88seconds
Required Hive
ve
SC2 ZergGrndCara.gif
Zerg Ground Carapace

Increases the armor of zerg ground units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Evolution chamber
Hotkey M
Level 1
Cost 100 Minerals

100 Vespene gas
160seconds

Mastery: -3.2seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 64seconds
Level 2
Cost 175 Minerals

175 Vespene gas
190seconds

Mastery: -3.8seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 76seconds
Required Lair/Hive
Level 3
Cost 250 Minerals

250 Vespene gas
220seconds

Mastery: -4.4seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 88seconds
Required Hive
ve
BioMechTransfuse SC2 Icon1.jpg
Bio-Mechanical Transfusion

Increases the HP healed by swarm queens Rapid Transfusion by 10. Swarm queens can use Rapid Transfusion on mechanical units.

Campaign Acquisition
Unlock Reach Abathur Level 6
Acquisition
Purchased from Evolution chamber
Hotkey T
Cost 100 Minerals
100 Vespene gas

60seconds

Mastery: -1.2seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 24seconds
ve
IncubationChamber SC2 Icon1.jpg
Incubation Chamber

Allows hatcheries, lairs, and hives to mutate two swarm queens at once.

Campaign Acquisition
Unlock Reach Abathur Level 6
Acquisition
Purchased from Evolution chamber
Hotkey I
Cost 100 Minerals
100 Vespene gas

60seconds

Mastery: -1.2seconds per Structure Morph and Evolution Rate mastery point. Down to a minimum 24seconds
Required Lair/Hive
ve

Development[edit | edit source]

Development model.

The following section contains information from a previous version of StarCraft II which is no longer valid.

The evolution chamber has undergone numerous changes during the development of StarCraft II.

Variants[edit | edit source]

Images[edit | edit source]

References[edit | edit source]

  1. Underwood, Peter, Bill Roper, Chris Metzen and Jeffrey Vaughn. StarCraft (Manual). Irvine, Calif.: Blizzard Entertainment, 1998.
  2. Barba, Rick. StarCraft Field Manual (hardcover). Insight Editions, November 17, 2015.
  3. Blizzard Entertainment. StarCraft II: Legacy of the Void. Collections Tab: Skins. October 17, 2016
  4. 4.0 4.1 StarCraft Legacy staff. 2011-05-30. May 2011 HoTS Gameplay Info. StarCraft Legacy. Accessed 2011-05-31.
  5. 2011-05-03, Blizzard Archive. "Blizzarchive.com", accessed on 2018-07-03
  6. Beta image 59. StarCraft Evolution. Accessed 2019-08-30.
  7. Beta image 12. StarCraft Evolution. Accessed 2019-08-30.
  8. Beta image 56. StarCraft Evolution. Accessed 2019-08-28.
  9. Hidden Pics, Angelfire. Accessed on 2019-08-28
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