Gaijin Games is at the top of my "do-want 3DS games" list with Bit.Trip Saga. The series was remarkably fun on Wii, again on PC, and should continue to be a joy in handheld form. It's almost too perfect a fit for the 3DS, which is why I'm so eager here.
Game Informer has some screenshots of the compilation, including one MPO file. You can load this up on your system to see what Bit.Trip Saga looks like with extra depth. I have a feeling these titles are going to be otherworldly in motion.
First Bit Trip Saga Screens, Box Art, And Special Surprise [Game Informer -- Thanks, Andreas]