This would be great for the subway crowd. The game would be playable with one hand in both portrait and landscape (like UFO Shooter). I made several mistakes with UFO shooter that this game will fix. The buildings were very detailed, but you could avoid them by just flying high. The scenery used to repeat too much because it was generated programmatically. This new game will use much lower voxel resolution, but each voxel chunk will be custom-designed. It really is a drag to have to design an endless terrain when it whizzes by so fast, so the lower resolution will help save level design time. The bendable and stretchable voxels could really shine in this game.
This scrolling shooter prototype is now included as a sample in Voxyc. The sample Lua source is here. Endless runner games can be done from this too. About the earlier kitten, pony and bunny idea, what about Star Kitten? A kitten that flies around in a spaceship and doing it's galactic duty destroying all the alien mice. It could be turned into an endless runner or a scrolling shooter easily. Maybe star kitten has has friends like star pony and star bunny and there is a story that follows. Anyway, you can start making your own endless runner or similar with that sample, and easily draw pixelated characters like this in the 2D editor now.
By the way, Google is phasing out 32-bit and I'm about to drop assimp as one of the supported third-parties because I don't have time to re-build it for Android x64, unless someone has a ready binary out there. I'm about to replace it with OBJ Loader, and if that fails, then it's sprites-only now for a while.