This has the makings of a great multiplayer game. The AI unfortunately needs some more work at the moment, but thinking about how to land my shots was honestly brilliantly designed.
The biggest issue I'd say is the view and controls. It's hard to tell where "up" is and where "right" is because of the isometric view. But I understand you need the isometric view so the player can see multiple sides of the die. I can't think of an elegant solution off the top of my head except maybe allowing the player to move the camera. Overall, you did a great job! Thanks for the experience.