That game is really cool, congratulations for the hard work so far Matt. I wasn't able to reach the end of the prologue yet, but I'll keep trying. Can't wait to get my hands on the full version!
I'm feeling nostalgic with all the great old-school games that were released/annouced lately here, makes me want to develop one myself. I like everything in CitD, the graphics, the audio and the gameplay, even the fabulously nes-esque instruction booklet!
I wish I was able to use my old Microsoft SideWinder gamepad, but it just doesn't work. For the full version you might want to extend the compability beyond Xbox controllers. It would also be great to have a screen were keyboard players could setup their preferred keys (instead of MMF's contextual menu).
BTW what does the Spirit Ring do once you got it?