Upgrade Icon
The Upgrade Defense icon allows players to upgrade a nearby Hero Defense. It is accessed from the Action Wheel.

Because each upgrade costs more than the previous one, a level 60 or greater hero is required to upgrade a tower to its maximum level.

Upgrade Level Mana Cost Required Hero Level
TowerUpgraded 1 100 4
TowerUpgraded 2 200 9
TowerUpgraded 3 400 19
TowerUpgraded 4 700 34
TowerUpgraded 5 1220 60


  • When playing the Barbarian, the icon gives player's access to his Battle Stances.
  • Upgrading a hero defense increases its damage by 10% each level, and its health, aura lifespan or trap detonation charge number by 20% each level. (A level 5 defense will deal 50% more damage and have 100% more health than an un-upgraded defense).
  • On the other hand, upgrading a hero defense will mean that it acts as if the Hero has a higher Defense Area of Effect and Defense Attack Rate. A level 1 turret has a bonus of 2 to all stats, while a level 5 turret has a bonus of 36 to all stats.
  • While the hero who summoned the tower is active, damage is increased by 33% (PC).
  • Current as of PC version: 7.36c.
Hero Stats Tower Stats Action Wheel Hero Menu

Player Health Player Damage Player Speed Player Rate

Defense Health Defense Damage Defenseaoe Defense Rate

Build Menu Icon Upgrade Icon Repair Icon Sell Icon

Heal Self Icon Detonate Icon Hero Info Icon

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