Rules

You have three ways to win, these are the conditions.

Win conditions

1v1 · ARAM maps

First kill

Getting the first kill counts as a win. If your opponent gets executed, that counts as a win too.

First turret

Destroying your opponent's first turret counts as a win.

100 CS

Reaching 100 CS before your opponent counts as a win.

The app checks the result before updating MMR. If it can't tell who won, the result stays pending.

Before you play

  1. Queue in our app.You match with a player in the same region as you, for example EUW.
  2. Vote for your map.Choose Howling Abyss, Butcher's Bridge or Koeshin's Crossing.
  3. Pick and lock your champion in the app.Your opponent can't see your pick. Use that champion and stay on the same account for the match.

How MMR works

1,500MMR when you first join

Your first few matches change your MMR faster while we find your level. As you play more, those changes settle down.

Beat someone with more MMR and you gain more. Lose to them and you lose less. Against someone with less MMR, it works the other way around.

MMR helps us find you a fair match. It's separate from your League ranked LP.

What a win or loss can look like

Example MMR changes for players with established ratings
OpponentYou winYou lose
300 MMR below you+6−33
150 MMR below you+12−27
Equal MMR+19−19
150 MMR above you+27−12
300 MMR above you+33−6

These are examples once your rating has settled. Your exact change also depends on how much we know about each player, so early matches can move more.

More about the rules

How map voting works

You have up to 20 seconds to vote. If you both choose the same map, you play on that map. If you choose different maps, one of your two choices is picked at random.

The apps check that both players have the right map, champions, lobby settings and sides before starting.

What happens after a match?

Once both apps have confirmed the result, our app tries to close the League game. The League and Riot clients stay open.

We're still testing this, so you may need to confirm the exit yourself.

Champion picks & bans

We haven't decided the bans or penalties for using a different champion yet. Those penalties aren't active.

If the app can't confirm your champion, or it doesn't match your pick, the app stops. Hovering a champion or an app error doesn't count as picking the wrong one.

The planned rule is that if your opponent is confirmed to have used the wrong champion, you gain 0 MMR.

Why can the MMR changes be different?

We use Glicko-2. It looks at your opponent's rating and how sure we are about each player's level. A newer player can move more than someone with lots of matches, so one player's gain doesn't always equal the other player's loss.

After a long break, changes can be larger again. Your MMR doesn't drop just because you haven't played.