If this system fails, the game becomes a frustrating, unplayable mess that bleeds players instantly.

This article explores how developers design these algorithms to keep queue times short while maintaining a competitive environment.
How You Are Ranked
Most modern strategy games utilize a modified version of the Elo rating system, originally designed for professional chess.

This is why winning streaks inevitably end in a 'wall' of difficult matches; the system is functioning exactly as intended.
It only looks at your numerical rating.If you face a hard counter, it is pure statistical variance.In the lower arenas, the system often includes 'bots'. The Free-to-Play Dilemma
The standard Elo system works perfectly for chess because all pieces are equal, but tower rush games feature upgradeable cards.

However, if no such player is available, the algorithm will prioritize queue speed over level fairness, resulting in those frustrating, mismatched games.
System PriorityWeightTrophy CountThe system will always prioritize finding an opponent within a 50-trophy rangeUpgrade StatusThe system tries to match levels, but will abandon this check if the queue takes longer than 10 seconds Maintaining Competitive Integrity
Because the ladder algorithm must balance queue times against fairness, it will never be perfectly balanced.

When levels are equalized, the matchmaking system shines, ensuring that the better player almost always wins.