Bloodlust comes from World of Warcraft, Blizzard's long-running massively multiplayer online game, where it is the shaman ability that grants a party a temporary burst of haste. Because generations of players have heard it at the start of raids and difficult boss encounters, the short sound became shorthand for going all out. It spread through gameplay clips, streams and edited montages, where creators reuse it even outside World of Warcraft to mark a sudden push, a team effort or a high-energy turning point.