League of Legends, commonly referred to as League, is a multiplayer online battle arena video game developed and published by Riot Games. Inspired by Defense of the Ancients, a custom map for Warcraft III, Riot's founders sought to develop a stand-alone game in the same genre. Since its release in October 2009, League has been free-to-play and is monetized through purchasable character customization. The game is available for Windows and macOS. In the game's main mode, Summoner's Rift, two teams of five players battle in player-versus-player combat. Each player controls a character, known as a "champion", with unique abilities and styles of play. During a match, champions become more powerful by collecting experience points, earning gold, and purchasing items to defeat the opposing team. Teams defend their base and win by pushing toward the enemy base and destroying a large structure within it, the "Nexus"... This channel was generated automatically by YouTube's video discovery system.