Hmm.. Sonic, why not?
In an old thread I was talking about a very old project never finished (well, to be honest, NEVER STARTED!)
Here you can find some screenshots:
The project started more than 10 years ago just after the release of Zool, along a friend of mine, for the first time at work with amiga assembly. Our aim was to do a mix between Sonic and Zool. Due to the restriction of Amiga 500 hardware, we abandoned the project (we have would to put in a multilevel parallax scrolling, bob effects, 32+32 colours at time). All running at 50 Hz (maybe this was too much for us!) For the hack... well, it speak for itself: Sega/Mega...
If you need some graphis for a clone of Sonic, I have something for you. Unfortunately, it's too much time I didn't use Dpaint and I have lost in my memories all my knowledge about this program and the "graphic touch", so I don't think to be helpful to do new stuff... sorry... (but your project, Akira, it's a great idea!)