This is Super Mario World - A New Path By Master S.
The story is that Mario is out exploring a finds a bigger area of Dinosaur land. Mario, the adventurous plumber he is, decides to explore the new path.
I haven't got a lot at the moment but I have a video of a level nearly completed and a few screen shots.
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/e6F3fXlXkt8&hl=en_GB&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/e6F3fXlXkt8&hl=en_GB&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>
The "Nintendo Presents" screen
The title screen for now.
The intro screen.
The updated overworld screen.
Give feedback based on what I got at the moment.
Edit: I now have a userbar, just copy the code below: