This sound is recognized by players as a Deltarune-style xylophone chime from Toby Fox's game series. Short UI-like sounds from Deltarune spread widely through gameplay clips, meme edits and fan animations, where even a sub-second cue can instantly signal the game's tone. Creators keep using this kind of chime because it is clean, nostalgic and easy to layer over captions, sprite movement or inventory-style jokes without drowning out the rest of the audio.