Editing StarCraft (video game) (section)

===Resource management===
Each race relies on two resources to sustain their game economies and to build their forces: minerals and vespene gas. Minerals are needed for all units and structures, and they are obtained by using a worker unit to harvest the resource directly from mineral nodes scattered around the battlefield. Players require vespene gas to construct advanced units and buildings, and they acquire it by constructing a gas extraction building on top of a geyser and using worker units to extract the gas from it.<ref>{{cite web|url=http://classic.battle.net/scc/GS/res.shtml|archive-url=https://web.archive.org/web/20071030194233/http://www.battle.net/scc/GS/res.shtml|archive-date=October 30, 2007|title=General Strategy: Resources|work=[[Battle.net]]|publisher=[[Blizzard Entertainment]]|access-date=April 18, 2008}}</ref> In addition, players need to regulate the supplies for their forces to ensure that they can construct the number of units they need. Although the nature of the supply differs between the races—Terrans use physical supplies held in depots,<ref name="Tbasic">{{cite web|url=http://classic.battle.net/scc/terran/basic.shtml|archive-url=https://web.archive.org/web/20071011010924/http://www.battle.net/scc/terran/basic.shtml|archive-date=October 11, 2007|title=Terran Basics|work=[[Battle.net]]|publisher=[[Blizzard Entertainment]]|access-date=April 16, 2008}}</ref> Protoss use psionic energy channeled from their homeworld via pylons,<ref name="Pbasic">{{cite web|url=http://classic.battle.net/scc/protoss/bstrat.shtml|archive-url=https://web.archive.org/web/20071024031022/http://www.battle.net/scc/protoss/bstrat.shtml|archive-date=October 24, 2007|title=Protoss Basics|work=[[Battle.net]]|publisher=[[Blizzard Entertainment]]|access-date=April 16, 2008}}</ref> and Zerg is regulated by the number of controlling overlord units present<ref name="Zbasic">{{cite web|url=http://classic.battle.net/scc/zerg/bstrat.shtml|archive-url=https://web.archive.org/web/20071011014411/http://www.battle.net/scc/zerg/bstrat.shtml|archive-date=October 11, 2007|title=Zerg Basics|work=[[Battle.net]]|publisher=[[Blizzard Entertainment]]|access-date=April 16, 2008}}</ref>—the supply mechanic essentially works in exactly the same way for each race (just with differing impacts on gameplay), allowing players to create new units when there are sufficient resources to sustain them.