Crab Game is a free multiplayer game released on Steam in 2021, created as a playful take on the challenges in Netflix's Squid Game, and Red Light, Green Light quickly became one of its most recognisable modes. Streamers and friends playing together turned frantic runs and sudden eliminations into shareable clips, and the game's short, punchy calls travelled easily into short-form edits. It remains popular because the rule is understood instantly, the stakes feel high for a simple children's game, and the sound can turn any ordinary movement into a tense, funny test.