This sound comes from Undertale, the 2015 indie role-playing game created by Toby Fox. The game became widely known online for its distinctive soundtrack, pixel art style, and memorable sound design, so even short effects like the heal cue became recognizable outside the game itself. Creators still use it in gaming edits and memes because it communicates recovery immediately, especially in retro-styled videos, RPG jokes, and clips where someone gets a second chance.