I like the concept, the puzzles are challenging and when i finally do solve them, i get that aha moment. The art and music is also well done. However I think it is a little inconvenient how you can't go the previous level(Unless it was told somewhere and i missed it), and the swapping of dice process is a little tedious(Unless i also missed that somewhere). I think instead of pressing space to change dice, you can have a left and right selector, to choose between the dice easier, and make the animation shorter.