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.
The Concept of Sight Range
When a unit is deployed or finishes destroying a target, it scans its specific sight range for the closest valid enemy.
Understanding exactly how many tiles a unit can 'see' allows you to place distractions at the absolute maximum possible distance.
Memorize specific tile locations.Resetting aggro saves games.Flying units often have different pathing rules.
Manipulating the Z-Axis and Hitboxes
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.
Targeting MechanicHow to Exploit ItProximity PriorityThe enemy will always hit the skeleton firstAggro Reset on StunThe tower will rescan and target the swarm
Practice Makes Perfect
Reading about aggro ranges is completely different from actually executing pixel-perfect placements in the heat of a live match.
Once you internalize the invisible grid that governs the AI, the game slows down dramatically.
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