It is in demand, similar to the other game art disciplines. Some opinions about that here: http://wiki.polycount.com/wiki/Game_Industry#Art_Disciplines What artists are considered the best? Opinions and examples here: http://wiki.polycount.com/wiki/Portfolio#Examples Yes it can be freelanced,…
http://wiki.polycount.com/wiki/EnvironmentSculpting#Rock_and_Stone http://wiki.polycount.com/wiki/MultiTexture#Modulation_Blending Also check out http://wiki.polycount.com/wiki/Landscape http://wiki.polycount.com/wiki/Modular_environments