The .357 Magnum appears in Half-Life, released by Valve in 1998, as a powerful sidearm carried through much of the campaign and known for scarce ammunition. Its distinctive firing sound became familiar to players of the original game and later titles and mods, including Half-Life 2 and Garry's Mod where the audio is frequently reused. Short clips of the shot circulate on soundboards because the effect is instantly recognisable to shooter fans and works as a standalone gunshot outside gameplay footage.