This system of prioritization is known as ‘aggro’ (aggression), and mastering it is the most critical mechanical skill in the game.
If you cannot reliably predict which target an enemy unit will choose to attack, you are relying entirely on luck.
Vision and Targeting
If multiple enemies are within that radius, the AI will almost always lock onto the absolute closest target mathematically.
If a massive, slow-moving tank is lumbering toward your tower, you do not need to place your defense directly in front of it.

- Memorize specific tile locations.
- You must use a stun spell (like Zap) to force it to rescan.
- Adjust your placements for air threats.
The Geometry of Defense
One of the most complex aspects of aggro management involves understanding the physical size, or ‘hitbox’, of different units.
The physical mass of the tank will actually push the Miner backward, forcing him to lose range on the tower and retarget onto the tank.
| Targeting Mechanic | Tactical Application |
|---|---|
| Closest Target Logic | Place a cheap skeleton exactly one tile closer to the enemy than your fragile ranged attacker |
| Aggro Reset on Stun | If an Inferno Tower locks onto your tank, stun it with a spell while placing a swarm nearby |
Mastering the Grid
Reading about aggro ranges is completely different from actually executing pixel-perfect placements in the heat of a live match.
Control the aggro, control the arena.
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