Simply incredible!
One of the best Mario flash games I've seen...In fact, probably THE best!
The fact that all these characters work in Super Mario Bros. is hilarious. I love that you've used things from each game, even the music! Wow, talk about nostalgic.
Another cool thing is that you can switch characters after levels! Makes it easier to try 'em all!
One flaw...I can't listen to the amazing music properly because of the timer. :P