[G] 3 rax reaper opening in all MU

10depot
12 rax
13 gas
15 OC
15 second barrack
at 50 gas 50 min -> reaper
17 second depot
asap 3rd barrack and 2nd gas.
3rd supply
CC
4supply
CC

Wallin your natural :

This is the first aspect of the build that is quiet interesting. It allows you to wall with your 2 more barracks and the 3rd and 4th supply most of the large choke points defending your natural. It's essential to do it or you will die to lings counter runbys.

Scouting and adapting :

You want to check if your opponent is doing hatch first then gas pool or gasless pool or gas pool then hatch.

If you scout gasless pool you can commit more to reapers as the real counter of this is speedlings and he wont have those anytime soon. Otherwise you should be very careful at the timing of speedlings for your opponent.
If you scout roach warren cancel immediatly all the reaper you are making and go for 1 or 2 techlabed rax and start producing rauders and marines and add a bunker. you should be fine with a 3 rax production.

Aggression :

-for first reapers try to snipe drones and defending zerglings.
-when you got 2-3 reapers try to snipe queens (it's very easy to micro reaper vs queens)
-when speedlings pops if your opponent got a good amount of lings --> runaway to your wall using cliff in the path to escape lings or find a safe place where you can abuse cliffs.

- later in the game you can use your reaper as sucidal scouts or to scout forward when you are moving your army

Transitioning and macro:

When speedlings pop your aggression is basically over but you have 3 CC and zerg is only on 2 base and has invested a lot in lings so basically you are very close to even with your oponnent depending if u succeed to do some dmg or not.

You should add a factory and two engin bays behind this and going bio-mine or bio tank since you have already 3 raxes.

I personnally go for an adapted version of the 14 min bomber 200pop push (16 min for me because of reaper aggression)

http://day9.tv/d/Day9/day9-daily-530/

This build is much harder vs protoss but you can punish a lot of protoss openings with this.

Hiding your second barrack : this is essential because we want our opponent think we are going only reaper expand or reaper into WM drop something like that. This will make him most of the time make very early robo after expanding or simply expand which is the best situation for us.

Reapers vs stalkers : 2 reapers with good micro beats a single stalker. One of your goal early on will be to catch stalkers of your opponent. If you manage to kill one or two stalkers early on your opponent gonna have a bad time.

Scouting : It's very important to identify what tech path the protoss is taking. the best situation for you is your opponent expanding because he will have overall low count of units. 3 gate blink stalkers is actually a hard counter to this. basically if you see a lot of gates with your first reaper or scv scouting you should immediatly start marine maraud production and start defending. (it's hard to defend though)

Oracle : If you see a lack of second pylon or third pylon in his base with 2 gas assume that he is going to have oracles. if you can spot the proxy the protoss is dead because your reapers will shut down the pylon. Otherwise make a engin bay and two missile turrets in ur main. Use your reapers to harass your opponent main he will have few units.

Planetary nexus and MSC : just avoid thoses. With good micro you can still trade with stalker supported with MSC. IF your opponent attacks you with Z Z S MSC or Z S S MSC just kill all the ground unit and go to his base let the MSC alone he will deal less dmg than your reapers produce 3 marines and defend.

Transitioning and macro:

go for standard bio play you have all the infrastructure for that. You should have a good gas bank -> use it for early upgrades.
Your opponent will have invested a lot in stalkers so he will be late either on upgrade or on tech.

Scouting : The priority is to scout if your opponent is going for reaper opening or else.
If you scout reaper opening for your opponent, you should stay in your base to counter his reapers because basically your first reapers will be a little bit slower than a 12/12 or 11/11 opening. In the end you should have more reaper and snowball him. to do that just scout what goes out from the barrack with SCV.

No reaper opening :

poke the choke or other paths depending on the map and try to weaken or with luck kill some marines. Don't loose any reaper it's vital. If you see your opponent going factory you can still pick off some hellions with good amount of reapers.

Denying expand : basically when your opponent scout your going reaper he will ball his marines to not loose them and be snowballed. He will try to keep them up the ramp packed. To deny his expand, you should build a bunker near the choke to not let him go out. your bunker will most of the time not be scouted because you will constantly harass your opponent and lock him up ramp.


Hellbat drops : Later on Reapers can be used to defend hellbat drops. if you manage to savea good amount of reapers you can use them to follow medivacs and kill hellbats. It's not the perfect defense but it can save you from big trouble.

Transitioning and macro:


go for standard bio tank play .