Backrooms 3: Boss Fight is a horror game where the player has to escape from the different levels of the Backrooms, a mysterious and endless labyrinth of rooms and corridors. The game is a sequel to Backrooms and Backrooms 2, and features new levels, enemies, and mechanics. The player has to find items and clues that will help them unlock the exit door, while avoiding being caught by the entities that roam 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. Save this page to play Backrooms 3: Boss Fight online for free.