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Workers (AKA peons) are the units that mine minerals and vespene gas and construct buildings. They are the drone (zerg), SCV (terran), and probe (protoss). All three types of workers cost 50 minerals to produce.

SCV SC2 DevRend3

The terran SCV


Workers are fundamental to economic and tech development, as they harvest resources and construct buildings.

Most players spend their starting resources, and the first five or so minutes, training workers. Terran and protoss players typically have at least one command center/nexus training workers and do not stop until the late game; zerg must expand more aggressively and have fewer workers per expansion.

Workers are identical aside from HPs and construction method.

Raids may aim to destroy workers. Workers may augment base defenses in an emergency, using large numbers to partially offset their poor combat value.


Each race's worker unit has a different way of constructing that particular race's buildings.

SCVs must be present during the entire construction of buildings. The constructing SCVs may not be controlled during construction; construction must be completed, paused or cancelled to return control. SCVs may begin construction on most open ground.

Probes creates warp gates that transforms into buildings after a time delay. The probe may move to another task after creating the gate, unlike SCVs and drones. Probes may only create warp gates upon the psionic matrix generated by pylons.

Drones are fully occupied by constructing buildings like SCVs. Upon completion, the drone is lost and must be replaced. Drones may begin construction only on creep.



Workers return 8 minerals or 8 vespene gas per trip. They return 2 gas per trip from depleted geysers.

StarCraft IIEdit

Workers return 5 minerals per trip from normal patches, and 7 minerals per trip from rich patches. They return 4 vespene gas per trip. Gas may not be harvested from depleted geysers.

The terran orbital command allows the call-down of MULEs; MULEs are temporary supplemental worker units that may harvest minerals and repair. MULEs harvest 30 minerals per trip from normal and rich patches, but takes three times longer to mine than SCVs; an SCV and MULE may mine at the same patch at once. MULEs have no attack and have a limited lifespan good for approximately nine trips.

Terran command centers may carry five (upgradable to ten) SCVs; these may be transported when airborne.

Protoss may use Chrono Boost to train probes faster from nexii.

Zerg queen's may use Spawn Larva on hatcheries, lairs, and hives to produce extra larvae to be trained into drones.

Wings of LibertyEdit

In StarCraft II: Wings of Liberty, SCVs can be upgraded to repair faster and multiple SCVs can build a structure faster if they work together.

Heart of the SwarmEdit

In StarCraft II: Heart of the Swarm, passing the cursor over a main or a gas-extracting building will show the number of workers related to it[1] (example: "workers: 8/24" on a hatchery and "workers: 0/3" on an extractor).[1]


  1. 1.0 1.1 Blizzard Entertainment. 2012-06-08. Heart of the Swarm Update - New Videos (StarCraft II: Heart of the Swarm - Battle Report (Protoss vs Zerg)). Blizzard Entertainment. Accessed 2012-06-08.

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