Got the idea this morning and finished it from start to finish in about 4 hours, including resource finding, graphics making, and writing a tutorial as I went along.
Touch the screen to move nyan cat around and enjoy seconds to hours of nyan cattery goodness!
See http://www.dsgamemaker.com/dsgmforum/viewtopic.php?f=6&t=2422 for the tutorial, DSGM file and resources. Otherwise enjoy!
EDIT: Seems sound is only working in no$gba, and that this is a known bug..
