Doors is a Roblox horror game in which players work through a series of hotel rooms while avoiding entities, and badges reward milestones such as surviving floors, finding items or escaping particular threats. Clips of those moments spread through Roblox gameplay videos, streams and short-form edits, where the badge sound became a shorthand for a completed run or a hard-earned unlock. It remains in use because Doors players recognise it instantly, so creators can signal an achievement without explaining it, even in a video that is only a few seconds long.