Quote - This seems great!  Are there options to create other systems than rain or snow? As in can you change the snowflakes to, for example, leaves?

The two weather effects that are accessed through the atmosphere editor are "fixed". However, they are just an implementation of the particle system itself. You can set up a partcle emitter in the sky and have anything blowing around you want: leafs, rocks, elephants, cows...  One really nice featire of Vue's particle system is that you are not limited to specific emitters, any material can be turned into a particle source by assigning an ecosystem layer and activating particle motion. Pretty nifty.

TD