The song is the traditional Korean children's round 'Dunggeulge Dunggeulge', meaning round and round, featured in Squid Game Season 2, released on Netflix in 2024. In the series it plays during the Mingle game, where players must form groups matching a called number or face elimination. Clips of the scene spread quickly on TikTok and YouTube as viewers recreated the game, used the tune for group challenges, and paired it with tense countdown edits. Its simple, innocent melody makes it instantly recognisable, and it remains popular as shorthand for a cheerful game turning suddenly high-stakes.