Team Fortress 2 is Valve's team-based multiplayer shooter, released in 2007, in which critical hits deal greatly increased damage and are marked by a distinctive sound and visual effect. Because a crit can turn a losing fight instantly, players learned to recognise that audio cue as a sign of a high-stakes moment. Editors later lifted the short sound for gaming montages, reaction clips and memes, where it works as shorthand for luck, power or an unexpectedly strong hit, keeping it familiar long after its original release.