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.
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.
- 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.
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 Priority | Importance Level |
|---|---|
| Elo Rating | The system will always prioritize finding an opponent within a 50-trophy range |
| Upgrade Status | The system tries to match levels, but will abandon this check if the queue takes longer than 10 seconds |
True Fairness
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.
