This system of prioritization is known as 'aggro' (aggression), and mastering it is the most critical mechanical skill in the game.

This article will dissect the mathematics of sightlines, retargeting, and unit hitboxes to help you manipulate the AI flawlessly.
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.Melee units have very short sight ranges.A fast unit will cross tiles quickly, altering the math. Advanced Aggro Tricks
Large tanks have massive hitboxes, meaning melee defenders can attack them from slightly further away than smaller troops.

This highly advanced technique, known as 'body blocking', requires absolute precision but can save hundreds of tower hitpoints.
Unit CategoryAI PatternBuilding ChasersCompletely 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 Drilling the Mechanics
Have a clanmate repeatedly send the same tank down the lane while you try to pull it to the center using different tiles.

You will no longer panic when a massive push approaches; you will simply calculate the optimal placement and watch the AI dance to your tune.

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