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.
The Concept of Sight Range
Every single unit in the game possesses a hidden 'sight range' value, usually measured in invisible tiles.
Understanding exactly how many tiles a unit can 'see' allows you to place distractions at the absolute maximum possible distance.
They are easier to distract with cannons or teslas.Melee units have very short sight ranges.Always account for the unit's movement speed.
Advanced Aggro Tricks
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.
Unit CategoryTargeting StyleTower HuntersCompletely ignore all enemy troops, making them incredibly easy to kite across the entire map with cheap structuresMelee AssassinsOften have dash abilities that lock onto targets from far away; must be intercepted before the dash animation begins
Practice Makes Perfect
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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