Behind the colorful graphics and intense gameplay of every successful arena battler lies a complex, invisible mathematical engine.
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.
This is why winning streaks inevitably end in a ‘wall’ of difficult matches; the system is functioning exactly as intended.
- 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.
The system will try its best to match you with someone who has the same trophies AND a similar tower level.
| System Priority | Importance Level |
|---|---|
| Elo Rating | The system will always prioritize finding an opponent within a 50-trophy range |
| King Level / Card Levels | The system tries to match levels, but will abandon this check if the queue takes longer than 10 seconds |
Maintaining Competitive Integrity
By artificially capping all card levels to a specific number, the algorithm can rely purely on the Elo rating.
When levels are equalized, the matchmaking system shines, ensuring that the better player almost always wins.