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

While this conspiracy theory is widespread, the reality is much more mundane and focused entirely on mathematical fairness.
The Elo System Adapted
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.
It only looks at your numerical rating.If you face a hard counter, it is pure statistical variance.It helps them learn before facing real humans. 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.
Player PerceptionHow it Actually WorksThe Loser's QueueThe algorithm does not force losses; you are simply playing tilted against harder opponents because your MMR is inflatedRigged Deck MatchingDevelopers have confirmed repeatedly that the algorithm does not read the contents of your deck when finding an opponent The Esports Standard
Because the ladder algorithm must balance queue times against fairness, it will never be perfectly balanced.

The algorithm is blind; it only respects victory.