League of Legends LoL was a very popular multiplayer online combat game with a large player base and a high degree of attention around the world. Since its launch in 2009, LoL had become an important part of the eSports scene and was widely promoted and competed in eSports competitions around the world. According to Riot Games '2015 Gaming Report, LoL was one of the largest online games in the world with more than 1.1 billion players. It was also considered one of the classics in the field of e-sports, with many well-known players and teams such as Riot Games, DICE, SKT, RNG, etc. League of Legends was very important in the online gaming world. It was not only a classic multiplayer online competitive game, but also one of the important competitions in e-sports, attracting the attention and participation of a large number of players and fans.