Red and blue blocks

Flip-Out Walls are special stage elements appearing only in the Flip-Out Galaxy in Super Mario Galaxy 2. They appear as red and blue walls that push out of the main wall in the galaxy. When Mario does a Star Spin, the red-colored Flip-Out Walls will come out of the main wall while the blue Flip-Out Walls will go back into the main wall, and vice versa. Mario can use these walls as platforms or wall jump up the walls to reach other parts of the level. It is interesting to note that Cosmic Clones can pass through Flip-Out Walls to follow Mario.