PvP 3gate Robo

General Overview

This classic 3gate Robo gets an Observer for detection and a fast Mothership Core in order to play safe. It can then attack your opponent with a strong army, or take an expansion and tech to Colossi or Chargelot/Immortal.

Build Order

  • 9 – Pylon
  • 13 – Gateway
  • 15 – 2 Assimilators
  • 16 – Pylon
  • 18 – @100% Gateway, start Cybernetics Core
  • 21 – @100% Cybernetics Core, start Stalker, Warpgate Research, Mothership Core, and Pylon
  • 25 – @100 Gas, start Robotics Facility
  • @100 Gas, start Sentry and Pylon
  • @100% Robotics Facility, start Observer and 2 more Gateways
  • @100% Observer, start Immortal
  • @100% Warpgate Research, warp-in 2 more Stalkers and a Sentry
  • Benchmark: When 1st Immortal finishes (@6:40ish), you should have 3 Stalkers, 2 Sentries, an Observer, an Immortal, and a Mothership Core with 24 Probes at home.


This build gets you a fast Mothership Core for defense with a reasonably timed Observer for detection, so scouting is quite minimal.  You might find it useful to scout around your own base for a proxy Gateway/Cannon Rush attack with your Probe that starts your Gateway.


This 3gate Robo can transition into a macro build or an all-out attack.  If you want to attack with this build, then constantly produce Immortals after your first Observer and warp-in units 3 at a time.  Set up a proxy Pylon near your opponent’s base and attack while reinforcing with 3 Warpgate units at a time.

If you want to play a more macro style, then stop all army production after your first Immortal and start a Nexus, and either Robotics Bay or Twilight Council.  Going for a Stalker/Colossus army or a Chargelot/Immortal army will set you up for a strong midgame.

Pros and Cons

This build is strong because it is so easy and safe to execute, and can transition very easily into a strong attack or a macro style of play.  It also gets an Observer for fast detection against DTs.

However, this build gets a slower Nexus and thus economy than a 1gate FE build like NaNiwa’s Safe Expand does.

Favorable Maps

This 3gate Robo is viable on every map.  However, it is best to transition into a Nexus on larger maps and attack with Immortals on smaller maps.

  • King Sejong Station
  • Overgrowth
  • Catallena
  • Merry Go Round
  • Deadwing
  • Foxtrot Labs
  • Nimbus


3gate Robo Tutorial Replay vs a Very Easy AI