I'm not 100% sure what was going on, but that is just because I'm stupid. I feel it goes too fast for it to be a puzzle game. It should be slower so that I can actually think. Especially since the game isn't as easy to understand as Tetris. It requires numbers and space and how the number can change over time. While Tetris it's just "Fit block in space." Not saying this game is bad, it just requires an easier start.
And make the button to throw dice different to move. I don't know why you even have to click to move the die in the first place. You have the mouse position, just make the mouse position the die's position instead.