Our entry: https://ldjam.com/events/ludum-dare/38/planets-of-zoltcon
Retrospective
We got the orbital mechanics working...and I put in the magic "HTML5" keyword in the description so it is now correctly classified.
We learned that having an orbital mechanics AND individual levels is a ...bit to much for a 72 hour game. We should have just stuck with an orbital mechanics game...which was hard enough. So, scope was a problem. No surprise there. Also the tutorial which I placed in the latest version really should have been part of the astronauts first journey to a planet. However I have a lot going on in my life right now so we settled for a slide show. In the future that needs to be given more priority with less given to doing more levels.
Also the web version is working better than the windows exe. The windows exe seems to have problems with the player's spawn point not scaling all the time when the planet shrinks, so you end up spawning outside the planet. Need to get that worked on.