The movie is really great... I guess that is what I ever wanted to see on screen
I agree that there are many parallels to Atys, like said before the planet and it's ecosystem share loads of similarities.
James Cameron stated, that he wrote the movie compiling all the sci-fi/fantasy books he ever read. I'm sure that, when Neverax made Ryzom, they also didn't invent things but adapt and copy from other sources, mixing them with own ideas. I admit, my knowledge on other virtual worlds is still very limited, but I'm sure, that there are comon sources for the similarities. Still, some parts of the movie might still originate from Ryzom ... we should ask Cameron for his Ryzom character name
yours Cotare