Heeheehee...
Needs work...scrolling through backgrounds and repeatedly getting stuck back on the title screen was annoying...Also ya may wanna add more things to play around with...I must say it was kinda amusing to make fire spew from Mario's arse...but eh...thats about all I found entertaining...
Good job; and I think you should fine-tune this gameandsubmit a re-vamped version sometime. :)