How the ELO Rating System Works on Azul Tiles

Azul Tiles uses an ELO rating system to rank players on the global leaderboard. If you have never played a competitive game with ELO before, the number next to your name might seem mysterious. This guide explains exactly what it means, how it is calculated, and how to use it to track your actual improvement.

What Is ELO?

ELO is a method for calculating the relative skill level of players in a competitive game. It was originally developed by Hungarian-American physics professor Arpad Elo for chess in the 1960s, and it is now used in everything from chess to FIFA rankings to online gaming matchmaking.

The core idea: every player has a rating number. When two players compete, the expected outcome is calculated based on the difference in their ratings. If you win when you were expected to lose (a big upset), you gain many points. If you win when you were heavily favored, you gain fewer points. Losses work the same way in reverse.

Over time, ELO ratings converge toward a player's true skill level. Players who are genuinely better end up with higher ratings, and the system self-corrects through enough games.

Starting ELO on Azul Tiles

All new registered players on Azul Tiles start with a base ELO rating of 1000. This is the standard starting point for most ELO-based systems. Players below 1000 have lost more than they have won against average opponents; players above 1000 have won more.

The leaderboard is visible at azultiles.com and can be filtered by time period: all-time, monthly, weekly, and daily. The daily and weekly leaderboards are good for seeing who is on a hot streak. The all-time leaderboard reflects sustained performance.

How ELO Is Calculated After Each Game

After each game, your ELO changes based on two things: the outcome (win or loss) and the expected probability of that outcome given the rating difference between players.

The formula uses an expected score function:

• Expected score for Player A = 1 / (1 + 10 to the power of ((Rating_B - Rating_A) / 400))
• If your expected score is 0.75 (you are the heavy favorite), a win gains you fewer points than if your expected score was 0.25 (you were the underdog)

The actual point change is: ELO change = K x (Actual score - Expected score)

The K factor is a sensitivity multiplier (the maximum points that can change per game). On Azul Tiles, K is calibrated based on a player's number of games played. Newer players have a higher K factor so their rating settles faster, while established players have a lower K for stability.

ELO in Multiplayer Games

Azul supports 2, 3, and 4 player games. For multiplayer games, ELO is calculated using pairwise comparisons. The winner is compared against each other player individually, and ELO changes are averaged across those comparisons.

This means winning a 4-player game with high-rated opponents earns significantly more ELO than winning the same game with low-rated opponents. The composition of the table matters for how much your rating moves.

What ELO Ranges Mean on Azul Tiles

These ranges are approximate and shift as the player base grows. Check the current leaderboard for a live sense of the distribution.

Tips for Climbing the ELO Leaderboard

• Play frequently. ELO requires volume. A small number of games means high variance. 30 or more games gives you a more accurate rating.
• Avoid playing on tilt. Losing 3 in a row and playing carelessly leads to larger rating drops. Each game is independent. Take a break if you are frustrated.
• Seek stronger opponents. Playing against players rated above you earns more ELO per win. The Quick Play system matches you with available opponents.
• Track your trend, not individual results. Look at your weekly ELO movement, not a single game. A win rate of 55% or more against average opponents will gradually push your rating up.
• Review your losses. After a loss, think about one decision that could have gone differently. Azul games are short enough that the key moment is usually identifiable.