League of Legends, Riot Games' popular multiplayer online battle arena game released in 2009, uses a distinct announcer voice to call out multi-kills during matches. A double kill is awarded when a player defeats two enemy champions within a short window, and the announcement has become instantly recognisable to players and viewers alike. Clips of the sound spread through gameplay videos, streams and montages, where it now functions as shorthand for a skilled, fast sequence, keeping it in regular use long after its first appearance in the game.