Thanks for the detailed feedback. Glad you liked my game, and the feedback I left on yours.
Working on the near miss system some more sounds like a good shout. I'll check out SUPERFLIGHT too for inspiration. I also agree that some more feedback about how many points you get for near misses is needed.
I'd forgotten about the refuelling mechanic in Toss the Turtle. That would be interesting to work into my game, I'll look into whether it works given the level of control you have over the ship.
Thanks again, and best of luck to you too!