In recent years, major online games have developed the ability to build a game that allows games to play against other players of similar skill level. The League system is exactly that, a ranking system to find other players of a similar skill level to play with or against. Riot have opted to use a ranking system where players can see their progress through divisions symbolised by a badge. Each division has its own badge so it's easily identified which division your character is currently within.
What are Ranks in League of Legends ...
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