- Manned turret with 10 grenades.
- +1 (Cost: 1): Fire faster grenades and utilize a larger grenade capacity. (15 grenades)
- +2 (Cost: 1): Significantly increased explosive radius and damage for the turret.
- +3 (Cost: 2): A larger ammo capacity provides more firepower per dollar. (30 grenades)
- +4 (Cost: 3): Equipped with incendiary rockets that will burn their targets after impact.
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