In my opinion I find that this game has a lot of potential, heck the idea itself deserves it's own commercial release, however there is still a lot to be improved on this game:
>The tutorial level needs a lot of refining, I was confused and I thought the game was broken at first until I pressed R on my keyboard by accident, maybe try using more color or obvious visual hints when making the tutorial, since the first the thing the player is gonna experience.
>The die needs to have a hint at it's "density" ability, say I get 1, then when I pick up the die it should be too light to control, 2 is more controllable, 3 is completely controllable, 4 is a bit heavy, 5 is really slow when moving the cursor.
>There are some glitches that I experienced when playing the game:
- when respawning the die using Q sometimes it spawns inside of a wall
- in the second level the die kept making sound effects after leaving one of the screens
- the water (low gravity thing) needs to be scaled down a bit in the second level at the final screen
Anyways this was my overall experience with the game and I hope the game succeeds and it's dev team :)