Sentry Gun
As the first and most basic defensive structure on your base, the Sentry Gun has a balance of damage, range, and even attacks ground and air units.
Build Quantity | Command Center level required (CC level)
1(CC1), 2(CC2),3(CC3),4(CC5)
Attack Rate: 0.867
Attack Range: 10
Damage Type: Single
Target Type: Ground, Air