Took a while to figure out how the mechanics worked - I didn't realize the roll button was actually clickable, I thought it was just telling me to roll... but how? After I got it, there's definitely something interesting here and it's well presented, but it's also a little tedious.
I think it would be better if the control scheme could be simplified. Right now, you click the screen with the mouse, then you press space a few times, then you press enter... you could, for example, do everything here using a single button if the dice roll simply defined your distance rather than specifying a max distance (I never saw any reason to go less than the max distance). By removing that variable, you could press space to roll which gives you a distance, then you could press space again to specify direction. I think that would make it a bit more fast paced and fun.
But I have to say, great work for just a couple days!