Standoff 2 is a mobile first-person shooter developed by Axlebolt, first released in 2017, built around team matches where one side plants a bomb and the other must prevent it or defuse it in time. The defusal sound comes from that central objective, signalling that the defuse process has started while the round timer keeps running. As gameplay clips, montages and memes spread on video platforms, players began using the audio outside the game as a recognisable shorthand for a high-pressure countdown and a narrow escape.