The Intel Extreme Masters (IEM) is a series of international esports tournaments held in countries around the world. These Electronic Sports League (ESL) sanctioned events, sponsored by Intel, as of 2024 currently host events in Counter-Strike 2 and StarCraft II. Other game titles were hosted in the past. The body that owns the league is Turtle Entertainment. The League has operated 17 seasons as of 2023. The highest tier of events, known as Masters Championships, are held in the summer in Cologne, Germany and in the new year in Katowice, Poland and offer the most prize money. Other events, known as Masters events, are held in numerous cities around the globe, which have included Dallas, Shanghai and Sydney.

Esports, short for electronic sports, is a form of competition using video games. Esports often takes the form of organized, multiplayer video game competitions, particularly between professional players, played individually or as teams.