Working code:

https://www.khanacademy.org/computer-programming/p...

Website for the game:

http://ppp.megageneration.com

Our game story:

"Year 5037...

Due to continuous and ever accelerating exploration of space and NASA's astrophysics experiments with matter and energy, mankind has reached such a milestone in its development that it could design and create entire planets from protoplanetary clouds. Specifically, people could now plan a future planet based on key concepts of astrophysics and then alter matter and energy in the cloud, such that precisely that planet is formed later on.

This previously unimaginable development became known as Planetary Engineering, and the people doing design and planning of future planets from protoplanetary clouds were given the position title of ProtoPlanet Planners."

:-)