This system of prioritization is known as 'aggro' (aggression), and mastering it is the most critical mechanical skill in the game.
Top-tier players use their deep understanding of aggro mechanics to lead enemy armies on wild goose chases around the map.
Vision and Targeting
Every single unit in the game possesses a hidden 'sight range' value, usually measured in invisible tiles.
As long as you place a building just barely inside the tank's sight range, the tank will alter its path and walk toward your building.
- Use the arena tiles as a visual guide.
- If a unit is already locked onto a tower, it will ignore closer targets.
- Adjust your placements for air threats.
The Geometry of Defense
Large tanks have massive hitboxes, meaning melee defenders can attack them from slightly further away than smaller troops.
For example, if an enemy Miner is locked onto your tower, you can deploy a large tank directly on top of him.
| AI Logic | Player Action |
|---|---|
| Distance Rule | Place a cheap skeleton exactly one tile closer to the enemy than your fragile ranged attacker |
| Aggro Reset on Stun | The tower will rescan and target the swarm |
Mastering the Grid
You must spend hours in friendly battles practicing these specific interactions until they become pure muscle memory.
Control the aggro, control the arena.
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