<human>:  What is the most popular eSport?
<bot>: The most popular eSport is League of Legends. League of Legends is a multiplayer online battle arena (MOBA) video game developed and published by Riot Games. It is the most popular video game in the world. League of Legends is a game that pits two teams of five players against each other in a battle arena, where each team tries to destroy the other team's "nexus" (a structure that gives the team a huge advantage). The game is free to play, but there are in-game purchases available.