Really interesting. I like how the game only shows you one face of the cube at a time. Unlike some other turn based dice games I've played, this one actually got me to try to remember and think about the orientation of the dice rather than forcing me to just guess what the answer is by mashing WASD.
I think the concept of replacing different sides of the dice with items you pick up is really interesting. It's like the dice is the inventory.
all in all, great stuff although I only wish there were more levels (which is probably the best criticism a game developer can get).