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

While this conspiracy theory is widespread, the reality is much more mundane and focused entirely on mathematical fairness.
Trophy and Rating Systems
Most modern strategy games utilize a modified version of the Elo rating system, originally designed for professional chess.

When you go on a massive winning streak, your trophy count inflates, and the algorithm begins matching you against significantly better players.
If you are hovering around 50%, you are in the correct arena for your skill level.Patience is required.If you drop trophies, the algorithm matches you against easier opponents. Level-Based Matchmaking
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.
Algorithm CheckWeightCurrent RankAbsolute 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.

The algorithm is blind; it only respects victory.