Undertale is a 2015 independent role-playing game by Toby Fox, built around turn-based battles where timing and attacks shape every encounter. Its short combat sounds, including this slash, became easy to lift for fan videos because they are instantly recognisable to players without needing dialogue or context. As Undertale clips spread across video platforms and soundboard sites, creators reused the slash for sword fights, joke battles, and dramatic edits far beyond the original game. It remains popular because a half-second hit sound can sell an action beat faster than music or narration.