Sonic CB(Crystal Ball) is a fan-game experiment which blends 2D and 3D elements. The visuals are created by taking a large 3D sphere and wrapping it around the player. Other visual elements include a flexible screen which can zoom, stretch, and pan to the left or right. Objects on the 2D plane also have the ability to move along the Z-axis.
Engine Test 2 for fan-game "Sonic CB"
This looks great so far. I'm assuming you'll fix the glitchy grass under the moving platform. Other than that really nice, especially the backgrounds and various features :).