Doors is a Roblox horror game built around exploring dark hotel rooms while avoiding entities that hunt the player, and the flickering lights are one of its clearest warning signs. When the lights stutter, players know to hide or run before an entity rushes through the corridor. Clips of that moment spread through Roblox gameplay videos, horror edits and TikTok, where the sound alone tells viewers danger is coming. It remains popular because it needs no explanation for fans, instantly sets a tense mood, and works as a short cue in memes, reaction videos and spooky edits.