Turret

The Turret is your basic defense against ground units. In its basic form, it can beat T1 and some T2 units of equal number. Can be upgraded to an Artillery Turret, Flame Turret or its T2 and T3 versions. The T2 version gives moderate improvements to all stats, while the T3 version sees a huge jump in range, health and DPS and even has Self-repair, but comes at a hefty prize. However, with a big enough economy to produce them in bigger numbers, these can take on even experimental units.