The Red Bubbles Maze is a reddish maze entered from Orange Tiles Path, and presumably Yume Nisshi's answer to Yume Nikki's infamous Hell Maze.
It seems flooded with red water, and the borders look like red bubbles. There is a vending machine south from the entrance. There are three red NPCs, one to the east that teleports you to a narrow path with arms hanging from the ceiling which connects to the Egg World. Another NPC takes you to the Sewers, and yet another that teleports you to White Tiles Path.