Starcraft 2 3 Rax Build Order
Starcraft 2 Terran Build Orders --> 3-Rax Build Order (you are here)
The Starcraft 2 3-Rax build order is not only one of the most effective Terran openers, it is also one of the
The 3-Rax build is perhaps the most aggresive opener the Terrans have in their arsenal in Starcraft 2.
It involves going for 3 early Barracks with two Tech Labs so you can quickly research upgrades and push out.
There is are a lot of ways you can do this push, but below is my favorite build order.
3 Rax Build Order:
9/11: Supply Depot
12/19: Barracks (train 1 Marine as soon as it is done then attach a tech lab; research Concussive Shells as soon as
it if finished)
15/19: Orbital Command
17/19: Barracks (tech lab as soon as it is done)
17/19: Supply Depot
..continue to pump SCVs
25/27: Barracks #3 (with Reactor)
..continue to pump SCVs, Supply Depots, and infantry. Grab Combat Shields on the second Barracks when you have the
This build order is not set it stone - you can change it depending on whether or not you need units earlier. You
can delay the third Barracks for a bit as well if your enemy is applying early pressure (this will give you more
money for Marines and Marauders).
You will also need to get a lot of saturation going (3 SCVs on each gas, 22-24 SCVs harvesting minerals, and
constant MULEs) to keep all 3 Barracks producing units and to have money for Supply Depots to keep up with
Continue to train units and push out as soon as Stimpack has finished. Continuously train units and rally them
to an appropriate spot so you can continue to reinforce your army. Stim up and go-in once ready.
If you go for an earlier push, bring a few SCVs to throw down a Bunker inside the opponent's main. If your
opponent is playing very defensively, throw a Bunker or two down outside his main to help keep him trapped inside
while you expand the map.
One of the most popular 3-Rax build orders involves getting +1 weapons/armor before pushing out.
However, as demonstrated in many of the top ladder games and professional level matches, Stimpack is 100% required
if you are playing against a good Zerg player.
Stimpack and Combat Shield are a lot more meaningful for an early infantry push than +1 weapons and armor is.
The primary reason for this is that because Zerg and Protoss players have wised up to this push and are now getting
very effective at stopping it.
You will not be able to push against Banelings no matter how many units you have if you do not have
3 Rax Build Order vs Zerg
In particular, you can use stim to dodge Banelings when playing against Zerg and when trying to push up Protoss
ramps. Aside from the massive damage increase, the speed increase is a major bonus that cannot be discounted as a
When playing against a Zerg and going for an all-out bio push as recommended in this build order, you will want
to use stim to run your Marines away from Banelings while your Marauders either pick them off from a safe distance
or absorb the damage.
It takes a lot of Banelings to take down a Marauder, so losing a Marauder to a handful of Banelings is a good
trade for the Terran player, especially considering how long Banelings take to make.
Do not be afraid to stim multiple times with Marines, even if they are low on HP. Early Zerg units like the
Zergling, Baneling, and Roach, have short range, so that stim acts as a large mitigator (especially versus
Banelings), so losing the little bit of health makes little difference.
3 Rax Build Order vs Protoss
Stim-packs are also mandatory when pushing on Protoss, as you will need to push up their ramp quickly, otherwise
you risk getting cut off by Sentries.
When assaulting a Protoss base that is being guarded by sentries, you will want to keep your units at the base
of the ramp and send 1 Marine at a time up the ramp. This will give your Marines and Marauders vision to attack the
Keep an eye on Sentry energy levels and when they drop below the amount required for Force Field, stim and push
up the ramp. Do not be afraid to use a Scanner Sweep to see if you can push up the Protoss player's ramp. Just make
sure you do not stim and commit up the ramp unless you have a clear shot at it.
If the Protoss player is very defensive, simply camp out in front of their base, limiting them to 1 base.
Meanwhile, at home, take a second base, tech up, and build out your base. You can tech into Medivacs, 3/3 weaponry,
and even add a few Vikings to your army to protect against Colossi.
If the Protoss player will not come out to take his expansion, you will win the game easily.