I think the art style for Dice King is cute and the mechanics are pretty interesting and unique. The only problems I really ran into were:
1. sometimes the first jump wouldn't be high enough and the double jump wouldn't quite make it to a platform above (maybe the platforms were too high)
2. there was a section where I spat the die at the wall to reroll it and it bounced into a pit. It would be great if there was a way for the die to respawn so that if it's lost, you don't have to start all over again. (this happened 2 times)
I also found a glitch where the die to the last door before King Dice bounced off the door instead of triggering it. I was able to make it over by bouncing off the die to get a super double jump but still it happened.
All in all, pretty cool little game.