Grand Theft Auto IV, released in 2008, made the in-game mobile phone a central part of its story, with calls driving missions, friendships, and side activities in Liberty City. Players soon began clipping its distinctive ringtones and phone sounds for use outside the game, turning them into custom ringtones and short reaction clips on soundboards. Similar GTA phone audio, including GTA V notification sounds, remains popular for the same reason: a few seconds of game audio can instantly signal a call, a message, or an interruption without any explanation.