The tower defense mechanisms in POE Currency are associated with Blight - an activity in which the player can take part. These have a roughly 10% probability of being generated in a specific place, along with the NPC character Sister Cassia will constantly look next to them. All activity will be started by double interaction with the woman.

Paths will be generated to the core next to Cassia - monsters will walk in a few seconds in them. Their purpose, as in any tower defense game, to get to the core. The action will fail if they are reached by the amount. The core contains 10"health points", and creatures of different rank get a different amount - normal (white) 1 stage, magical (blue) two, infrequent (yellow 5), and exceptional (golden) 10.

The player's goal is to shield the core against the advancing waves of enemies. For this use, it can use the space for construction towers - these are marked with a hammer icon. The player can choose one of 6 items, after clicking on it:

Fireball Tower - fires fireballs that deal Fire harm. Chilling Tower - deals damage to Buy POE orbs nearby enemies. Shock Nova Tower - creates electric shock waves that manage lightning damage (Lightning). Empowering Tower - raises the effectiveness of towers. Seismic Tower - bargains damage and stuns nearby enemies. Summoning Tower - summons monsters.