Super Mario's Sonic Adventure logo

Just a little idea that's floating around in my mind. It's an idea for a Mario/Sonic platformer. The story is that somehow a rift between Mario's world and Sonic's world causes the two worlds to merge, and as a result, stuff gets messed up. Peach gets kidnapped by Eggman while Mario has to go and rescue her, while Sonic goes on a race against time to prevent Bowser from getting his hands on the Chaos Emeralds. Along the way, Mario and Sonic get into each other's paths at some points and spar against each other. When they realize that their worlds are merging with each other, Mario and Sonic team up before the worlds get obliterated.