High-Power Projectiles is a gameplay mechanic that you have to buy with NK Coins to access it.It doubles the power of all the attacks from your towers with the exeption of 4/4 Towers.For example: Monkey Builders without extra damage do 2470 damage with fully upgraded path 2.With Extra Damage,it will do 2640 damage with fully upgraded path 2.It costs 45 NK Coins.To access it simply go to the Modes Menu and click it.It wont appear if you have not purchased it.

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