@ 100% Barracks → Queue 3 Marines and have the SCV build a 2nd Supply Depot.
First 100 Gas → Build Factory (Every 100 gas, you want to build another factory, up to three).
Early Game Strategy
With your first 3 Marines, play aggressively at the center of the map. Your goal is to snipe enemy Overlords, fight against Zerglings, or engage Zealots. However, the key is to keep your marines alive.
This build allows you to apply early pressure compared to a traditional mech build (like the 8/8 build), giving you more map presence early on.
Key Points
Be proactive with your Marines in the center but don't overcommit. Keep them alive to continue your early pressure.
The transition into multiple factories will allow you to shift into a stronger mid-game with mech units.
If team positioning is bad, make a bunker before 3rd factory and don't be aggressive with your 3 marines