Great work on this game! The thrusters seem to be great but the turning is a little slow, might work with a bit of an increase with the turning speed? I love the pop up numbers but both in the normal web version and fullscreen mode I could barely see the UI element at the top. In Unity if you switch the canvas to Scale with ScreenSize that might fix the issue.
I am loving the start and direction of this, id definitely recommend you build upon it. Great work!