Supply

Supply is a terran gameplay counter limiting the size of a terran force. The number of counters is increased by constructing select units, to a maximum of 200. New units may be produced so long as the cumulative supply "cost" of all active units does not exceed the number of available supply counters.

Protoss psi and zerg control serve the same purpose as supply.

In strategy discussions, supply levels may be denoted as x/y, where x is the supply used, and y is the total available supply.

StarCraft

Here is a list of how much supply each unit takes in StarCraft:

Producers

	Building/Unit
10	Command center
8	Supply depot

Consumers

	Building/Unit
1	SCV Marine Firebat Medic Ghost
2	Goliath Siege tank Vulture Wraith Dropship Science vessel
3	Valkyrie
6	Battlecruiser
8	Armed Nuclear Silo

StarCraft II

Here is a list of how much supply each unit takes in StarCraft II:

Producers

	Building/Unit
16	Supply depot with Calldown: Supplies
15	Command center (LotV)
11	Command center (WoL/HotS) Orbital command Planetary fortress
8	Supply depot

Consumers

	Building/Unit
0	MULE Nuke
1	SCV Marine Reaper Medic
2	Ghost Hellbat Hellion Marauder Viking Medivac dropship Raven Spectre Vulture Firebat Science vessel Wraith Predator Widow mine
3	Banshee Siege tank Goliath
4	Diamondback
6	Battlecruiser Thor Hercules dropship