I was hoping that this was a finishing touch for my Mario game but it looks like I have some bugs I still need to fix. I just created a tank auto-scrolling stage similar to World 8 in SMB3. As you can see, the Super Mushroom falls through the scrolling ground and Mario is crushed on the right side of the screen. Perhaps I also made this stage a little too hard. Of course, this is the tank that guards Bowser's castle so it should be tough... 68 stages. Almost done.