The 3DS lcd would have to have something like a lenticular lens (or similar angle dependent viewing mechanism) in addition or within the barrier lcd otherwise both eyes would just see a blurry interpolation of both images. I have a feeling the outer polarizer layer has a microscopic lenticular grating pattern embedded into it, killing two birds with one stone.
Hope this game gets finished. Reminds me of super glove ball for the nes.
Thanks for bumping! I forgot about this game! I do hope it gets finished as well!