I don’t have another person to play with, so I’m afraid my review will be based on my impressions alone and not much into the depth of the gameplay itself. I think your concept is good, being able to change the faces of a die as you play is an interesting idea. It would be great if you could see the entire playfield at once instead of a small section.
The instrumentation of the music and the sound effects are rather grating, I think the song itself is fine, but less harsh tones would be easier to listen to as background music.