The 2 Rax Orbital build is a Terran opening that slightly delays gas and tech in order for quick Barracks and an Orbital Command. The main goal of this opening is to produce a lot of early Marines without sacrificing your economy (while not as economical as the Orbital Command Opening, this build is much more resilient to early rushes). Additionally, the two Barracks this opening produces can be used to block off your choke in order to fend off any attempted Baneling busts.
10 Supply Depot
12 Barracks
12 Barracks #2
14 Orbital Command
While the Orbtial Command is building, begin creating Marines and lay down a second Supply Depot. At this point its recommended to take your gas and start teching. Alternatively, you can build additional Barracks to keep pumping Marines out or even attempt to fast expand.
Tips:
- This opening is generally more powerful in 2v2, 3v3, and 4v4.
Almost all build orders are a rough estimation and can usually be adapted depending on your enemy’s actions. ALWAYS scout your opponent and adjust your build accordingly.
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