Thank you! I agree, difficulty is low. I opted for easy vs hard for the sake of the game jam. Shooting def could consequential and rewarding.
And in the beginning, could you see the simple instructions in the bottom third of the screen? I had a lot of trouble with UI scaling / screen resolution. But maybe this was too vague too.
And for the plus/multiply mobile game elements, yes! The accelerating powers of the 2x became a fun gameplay element I think, but in a more refined version of the game I think it could also help provide consequence/reward for quick movement.