Thanks for the excellent feedback, Brandon!  The game could definitely use a tutorial. :)  The gist is that you set up a series of delta-V burns at specific times, and keep starting the simulation over until you can get the rocket to the target planet.

Because of the way the game is built, it requires an actual webserver like Apache or Nginx to run behind if you want to run it locally.  If you don't want to go through that effort, you can play the game directly on the URL linked above in the submission description.

Yeah, it was going to have high scores per level as well, but I ran out of time. :)