Geometry Dash is a rhythm-based platformer created by RobTop Games, where players guide a cube through levels timed to music. The play sound comes from the game's menu and level-start interface, marking the moment a run begins after a player selects a level. As gameplay clips, speedruns and edits spread online, creators began reusing that short start cue outside the game to open their own videos. It remains popular because it is instantly recognisable to fans and signals a fresh attempt in under a second.