I just remembered I did this about 2 years ago, I thought I would post it and see if anyone wants to keep going with it. Star Mines 2 is a top-down shooter where you control a small ship through some enemy-laden passages.
Link to videoGame download: http://www.jpkware.com/sm2.htmlMovie file: http://tasvideos.org/userfiles/info/34347830050570217
The game is fairly easy to optimize, although I wasn't sure it was entertaining enough so I didn't keep going. Although there's an X and Y speed cap, there's an option to turn friction off, meaning that momentum is conserved while not thrusting, spinning, and even bouncing off walls. This opens up the potential for playarounds without losing any time. The game gets very difficult later on, so much so that I've found no footage or evidence that anyone's beaten the entire game. I can't find any level maps either so nobody knows what the final levels look like, or even how many levels there are! Found a link to the map editor on this site: http://www.jarikarjala.com/ There appears to be 12 levels and the layouts can be viewed by opening the .LVL files in a text editor.