Nintendo have bundled Super Mario games for an anniversary collection, but one fan has taken Super Mario Bros 3 a step further...
Using NEW Super Mario Bros. for DS as a base, a hardcore programmer known as SKJmin has put together a complete remake of the 1988/89 NES classic, Super Mario Bros 3. using DS sprites and other nifty elements to bring it all together. The project also includes various popular levels from the complete Super Mario Bros franchise, and some brand new creations.
Our bottoms would be severely kicked if we were to share a download link, but a fifteen minute "launch" trailer should hopefully suffice:
Via NeoGAF