Mope.io is a browser-based multiplayer survival game in which players control an animal, eat food and other creatures, and evolve through a food chain, and its start sound is the short jingle heard when a player enters a new session. Clips of the game spread through gameplay videos, livestreams and short-form edits, where the opening audio became a quick shorthand for a new run beginning. It remains popular with fans of .io games because it instantly signals the familiar, chaotic loop of spawning, growing and trying to survive.