The matchmaking algorithm is the unsung hero that determines exactly who you will face every time you press the 'Battle' button.

This article explores how developers design these algorithms to keep queue times short while maintaining a competitive environment.
Trophy and Rating Systems
Your trophy count is a numerical representation of your skill; win a match, and you take trophies from the loser.

If the system matches you perfectly, you should mathematically have a 50% chance of winning every single game you play.
Do not expect to win every game.Patience is required.If you drop trophies, the algorithm matches you against easier opponents. The Problem of Card Levels
The standard Elo system works perfectly for chess because all pieces are equal, but tower rush games feature upgradeable cards.

To combat this, developers have implemented secondary checks that look at the player's King Tower level.
Algorithm CheckWeightTrophy CountAbsolute Highest PriorityAccount StrengthThe system tries to match levels, but will abandon this check if the queue takes longer than 10 seconds Maintaining Competitive Integrity
This is why all true esports tournaments and competitive challenges utilize the 'Tournament Standard' ruleset.

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