We finished the planet for the Simulating the World seminar. The planet is completely procedural with L-Systems for procedural trees and particle systems for the clouds around the planet. The planet and all the stuff on it are also dynamically lit. The polygon count is around 160k all running in realtime with the use of the FireFly2 engine. 
During the coming few weeks Marries and I will keep working on it to make it into a real game instead of a simulation. This will involve quite a lot of refactor. Both on the engine as on the application itself.
