If anyone has ever wished that there were more tile shapes, here's your answer. The basic set has been expanded symmetrically to fill in the missing steep hill shapes, gradually sloped ceiling and steeply sloped ceilings for both C# and JavaScript (HTML5) projects. The attached project has all the customized content to do this without requiring a new release of SGDK2. Load the project, reset the source code to get all the standard code merged in, and you're set to go.