A side-scroller? Giltwist was working on such a project, it was called Tribulation. I think others had the idea aswell, but not quite as much potential as Gil had. I'm not really trying to dissuade you, since it is a very good idea. I actually would like to see something like this on Graal. But it does have its limits.
I must say, that if you end up with a bad Gravity script, I'll be breathing down your neck til you get a good one or let me make one
WHO TURNED IMG CODE OFF!!