Perks

Perks are special booosts to give towers special capability they never have before, perks have ranks too, having up to 5 ranks, which are common, rare, epic, legendary, and mythical. They are obtainable from the perks chests and only 1 perk can be used at a time, 2 if the double perk skill is available. Getting an identical perk will rank up the perk by 1, otherwise if the perk is already at max tier, it can no longer be tiered up and instead gives some cash back based on the rarity, to learn more about perk chests, click here