Really nice take on the theme, love how the walls are invisible but the pickups give you some guidance. I think the lack of win and loss states is a shame here, but for a prototype it's really good! The implementation of the advancing wall of doom was really cool too, with it becoming invisible if you're too far away.

Interesting maze, the idea of making the walls visible its interesting, but for me I would try another type of camera

Interesting maze, the invisibility makes it a lot harder. But I don't understand what the yellow spheres do? And you can jump on the maze by jumping from a ball to the top of the walls.

Fun idea, ofc add the win and lose states. Other than that perhaps making it random would be cool, but hard ofc.