Grand Theft Auto IV launched in 2008 and followed Niko Bellic through a grittier, more grounded version of Liberty City. Its interface and alert tones became deeply tied to that era of gaming, so short clips now circulate as Twitch alerts, edits and meme cues. Fans exploring the series also use the GTA V notification for the sequel and revisit CJ from GTA SA for the older San Andreas nostalgia. The sound endures because one hit instantly signals a mission, message or problem starting.