Backrooms Boss Fight is a horror game where the player has to escape from the Backrooms, a creepy and endless place filled with old, moist carpets and fluorescent bulbs. The game is based on the popular creepypasta and meme of the Backrooms. The player has to find items and clues that will help them unlock the exit door, while avoiding being caught by the entities that inhabit the place. The game also has a boss fight mode, where the player has to face a powerful and terrifying entity that controls the Backrooms.