Apex Legends launched in 2019 as a free-to-play battle royale from Respawn Entertainment, and its ping system quickly became one of its defining features, letting players communicate without voice chat. The ping sound itself is the short audio cue that plays when a teammate marks an enemy, weapon, or location on the map. Streamers and editors lifted the cue for TikTok, YouTube and Twitch highlights, where it now works as a universal gaming alert. It remains popular because it is instantly recognisable to players and instantly clear to non-players as a signal to look here.