ok, long way off yet
I can barely get a figure animated in Unreal Game engine UDK
(oddly something I rigged myself albeit badly made actually works better than a Daz figure so that area no issue!)
so this is really a hypothetical question.
say I created a terrain using a combination of my own textures ie photographs, paint/gimp/whatever and proceedurals that exported as a mesh created using the terrain editor, that probably would fairly safely be redistibutable as a game asset.
However, add a few Carrara trees?
getting rather questionable as I did not create the mesh even if I made my own vertex leaves, esp if I used the wind and rustle animation on it!
Likewise the ocean primitive.
I can actually export both trees and ocean with morph animation into various apps including Daz studio and recently iClone, no doubt Unreal and maybe Unity too, but if I ever did get the skills to create a game, could one populate it with Carrara trees?
at least one generated by using the editor and your own modelled/textured trunks and leaves , not a browser object?
it is not possible to turn a mesh into a Carrara tree so the generator needed to use the wind and rustle though I have had some luck applying bend modifiers to replicated selfmade meshes with limits created as real instances which would prob be the legally safest alernative.