Deltarune is the indie role-playing game by Toby Fox, whose first chapter launched in 2018 as a follow-up to Undertale. Its battle encounters open with a brief, energetic musical cue that signals the shift from exploration to combat, and fans have since reworked that cue into slowed, remixed, and looped versions for edits. The slowed take keeps the original melody recognisable while giving it a heavier, more cinematic feel, which is why it keeps appearing in fan animations, gameplay videos, and meme edits that want a dramatic entrance without losing the game's identity.