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.
How Units See the Arena
If multiple enemies are within that radius, the AI will almost always lock onto the absolute closest target mathematically.
Understanding exactly how many tiles a unit can 'see' allows you to place distractions at the absolute maximum possible distance.
- Building-targeting units usually have larger sight ranges.
- Place distractions closer to them.
- Always account for the unit's movement speed.
The Geometry of Defense
You can use the physical bulk of your own units to literally push enemy troops out of their preferred path.
This highly advanced technique, known as 'body blocking', requires absolute precision but can save hundreds of tower hitpoints.

| Targeting Mechanic | Player Action |
|---|---|
| Closest Target Logic | The enemy will always hit the skeleton first |
| Vision Refresh | If an Inferno Tower locks onto your tank, stun it with a spell while placing a swarm nearby |
Drilling the Mechanics
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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