Markiplier, the American YouTuber known for his energetic Let's Play and horror game videos, has long closed his uploads with a distinctive outro track that fans now recognise as his signature sign-off. As his channel grew into one of YouTube's most popular gaming destinations, viewers began reusing the music in their own edits, memes and tribute videos to signal a Markiplier-style ending. It remains popular because that instant recognition turns an ordinary finish into a shared in-joke for his large, long-running audience.