Barotrauma is a cooperative submarine survival game in which players crew a vessel deep under the icy ocean of Europa, managing flooding, fires, monsters and failing systems. Its warning alarm is part of that pressure, sounding when the submarine is in danger and the crew must react quickly. Outside the game, short alarm clips circulate among players and editors who recognise the sound from tense dives and chaotic multiplayer sessions. It remains useful because it needs no explanation for fans, while still sounding like a clear danger signal to anyone else.