League Arena is a game mode very similar to Battle Arena, except players that take part in these battles are ranked by their performance in the match using a points system.
After a ranked battle, players will gain or lose a certain number of points. The amount of points gained or lost is dependant on the performance of that player in the match. Points can be earned in a variety of different ways, from scouting and spotting to kills/heals and assists. Destroying plutonium or capturing the enemy base also awards points based on contribution. Players are ranked on a leaderboard and awarded points based on their contribution compared to other players on the leaderboard of that same tier.
Ranked battles currently occur every 14 minutes and players will have 1 minutes to enter the battle queue in order to take part. These battles still provide the players with the same amount of Robo Points (RP).