Left 4 Dead is a cooperative first-person shooter developed by Valve and released in 2008, built around four survivors fighting through waves of infected. Its short interface and combat cues were widely ripped and shared on soundboards as players began using game audio outside matches. This brief clip survives in that culture as a reusable sting for horror game edits and zombie-themed videos, where a recognisable shooter sound can signal danger faster than an explanation. Its length makes it easy to reuse across memes, streams and short-form gaming content.