In next version you will have instant drop down key, hold key and readjusted levelling system to make the game easier (till level 12).
The images are rotated because that is the orientation of the screen you have to manually rotate the image.
also the color problem comes from pngs being rgb while the 3ds handles bgr which also needs to be manually changed
I used xems Image to bin converter
I'm not sure since I've never done any C++, even less for 3DS, but I think you can solve the color bug converting your .pngs to .bins with this tool. This happens because the 3DS reads images in BGR color instead of RGB so it gets messed up.
