Since I love side scrolling shooters, I'd have to go with two of my favorites, Parodius and Gradius III
I'd want to a port of Mega Man X4 or X5, or a new Mega Man game using that engine, maybe using the Sega CD for shits n giggles.
Interesting. I posted about Angry Birds last year, and now it's actually being developed for the MD/Genesis. Someone must have noticed my request! haha
Dark Souls!
