Cool! I like this idea. Frankly speaking, I also wanted to do something similar, but in the end I hit the side of the lunar lander. The only thing I would like is to be able to have an auto mode for firing a gun, and not just single fire and full-screen mode.

Good job! I liked the game. My only feedback is that the controls were not super intuitive. I would've preferred to use Q and E to rotate, but it seemed like it gave priority to the cursor position, so that wasn't really an option. Also, I'm not sure if I was doing something wrong, but I wasn't able to use F to pick up items.