Knytt Stories is one of the best indie platformers. It's simple yet stylish, with beautiful atmosphere and music. It also supports user-made levels, and there are already hundreds of them (though new level archive is under construction and not all the levels are available).
It's a great game, so I really hope someone ports it to Dingoo or Dingux (sadly I myself know almost nothing about porting :/ )
As far as I know it was made in Multimedia Fusion 2. Source code for Knytt Stories as well as some other games by same developer (Nifflas) are available here: http://niffpage.greywool.com/files/Sources/
(Look for Knytt Stories.mfa)