Squid Game is a South Korean survival drama that premiered on Netflix in 2021, and its opening game, Red Light, Green Light, became one of the show's most recognisable scenes. Players must advance while a giant robotic doll watches, moving only on green light and freezing on red light, with elimination for anyone caught moving. Clips from the game spread quickly on TikTok and YouTube, where creators reused the cue to stage their own races, dares and parodies, and it remains popular because the rules are instantly understood even without dialogue.