Cool mechanical idea and actually unlike many games in the jam with bugged walls you did well to actually slightly indicate for the perceptive player which walls are bugged, especially with the help of signs. More sound and feel elements and graphical polish would've definitely given a big improvement. Something lacking is that it is a little frustrating to be in the air with no frame of reference, and just having void around you and not knowing where to jump. You tried to mitigate it with the arrows but it is still prevalent, and it unfortunately takes away a lot - perhaps even something as simple as a starry background instead of a single colour background.