The artwork is stunning, and the objective is really interesting. The music really adds to the atmosphere too. I'm not sure the dice adds to the experience, I felt like because it was out of my control it didn't affect how I was playing. If you took this further I wonder if there's a way of tying together the players actions to the timer, maybe with fuel based on distance travelled in one nav?
Fiki's comment is super comprehensive on the UX but these were my thoughts on the other parts
Great job!