Rhythm Heaven is Nintendo's rhythm game series, built around short musical minigames where players act exactly on the beat. Count-ins like one, two, three, four are a core part of that design, teaching timing before a pattern starts and giving players a clear starting point. Clips of these cues have spread online as editors reuse them to introduce dances, challenges and rhythm-based jokes, because the count is instantly recognisable to fans and easy for newcomers to follow. Its short length and clear tempo keep it useful for quick edits.