Metal Gear Solid, released for PlayStation in 1998, built its stealth gameplay around guards who react to sounds, movement and shadows before entering an alert state. The questioning line became shorthand for that tense moment of near-discovery, and players soon quoted it outside the game whenever someone heard an unexplained noise. As short reaction clips spread across video edits, streams and meme pages, the sound kept its meaning without needing any context from the story. It remains popular because it instantly signals suspicion, surprise and the comedy of an enemy being spotted just in time.
About this sound
The iconic Metal Gear Solid alert sound asking what was that noise, used when guards spot something suspicious in stealth gameplay and edits.
This short clip captures the moment a guard in Metal Gear Solid hears something out of place and pauses to investigate. A tense, questioning voice asks what was that noise, delivered with the cautious suspicion that defines the series stealth gameplay. The line is brief, less than a second long, but instantly recognisable to players who have spent hours sneaking past patrols and hiding in cardboard boxes. Hearing it triggers a flash of panic and humour at once, the feeling of almost being caught, and it works perfectly as a reaction to an unexpected sound, a clumsy mistake, or a friend walking in at the wrong moment.
