I used the "New Old Super Mario Bros." Sheet found on The Spriter's Resource as a reference for some of the sprites, so credit to Artie, Rapid the Hedgehog, MarioBegins, and PolarKoala. Around 90% of this is custom made by me. Credit not needed, but I would like it if you did.
UPDATE: Added 8-Bit cape to go with Mario, Added 8-Bit Overworld Yoshis, and fixed Mario's sideways Overworld walking, so he now bounces when moving.
No cape I think I had that ripped somewhere..
I think my Cheep Cheep Challenge hack had a 8 bit yoshi made by awesomezack of mfgg. Your more then welcome to extract and submit that. Dont bother giving me credit just awesomezack. He also drew me some alternative poses you can find on mfgg.
Now all we need is a better status bar that looks more smb ish and full complete hack could be made.