Certainly not! The game art that you see is a rough pass done to give it some character for the play testing.
We plan to create the illusion of height by using sprites that are broken into three segments: base, middle, and top. These segments will be stacked on top of each other (think snowmen) and splayed in one direction or the other based upon how far away the element is from the vertical center of the screen.
So, things towards the top of the screen with slant up, things towards the middle will be stacked nicely, and things towards the bottom will slant down. The visual effect this achieves is an illusion that players are running over a cylinder that is spinning with things sticking out of its surface.