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Biomass SC2-NCO Icon1


Biomass is biological matter that can be used by the zerg in order to evolve the Swarm.

Game EffectEdit

Left 2 DieEdit

In the official arcade map Left 2 Die, biomass is used as a resource, and is obtained by killing special zerg units and destroying infested buildings. A science facility can be used to spend biomass in new units, structures and upgrades.[1]

Heart of the SwarmEdit

In the the Heart of the Swarm campaign, biomass is used both for primary mission objectives and as optional objectives to gain levels for Kerrigan.[2]

Co-op MissionsEdit

Biomass SC2-LotV Game1

Biomass ready to be collected

In Co-op Missions, Abathur gains biomass from destroyed enemy units. This allows the creation of upper tier units such as the brutalisk and leviathan.


On a island on the east side of the map "Old Soldiers", there is an outhouse labeled "Terran Biomass."


  1. Blizzard Entertainment. StarCraft II. (Activision Blizzard) Map: Left 2 Die (in English). 2011.
  2. Blizzard Entertainment. StarCraft II: Heart of the Swarm. (Activision Blizzard). PC. Mission: Heart of the Swarm, Enemy Within (in English). 2013-03-12.

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