I know, this thread is a little bit old, but I was just pointed toward it today so please forgive the late response!
Yes, Return to the Labyrinth is NOT a real movie.
So what IS it then?
As it says on the site, it's a Producer's Chair film. The link to Producer's Chair doesn't work anymore as the site now has a new URL (and new name and new owner -
www.filmtycoon.com), so let me explain about Producer's Chair.
PC is a moviemaking game. You log in, start a production company (and possibly a creative company that makes websites and posters), make a movie and release it into PC theaters. The players vote daily and the person who makes the most money in a set amount of time wins.
Return to the Labyrinth was done specifically for this game. It's not a real movie. It's never been a real movie. Sorry for the misunderstanding that it seems to have created!
Now, to those who read it, thank you for taking the time to read it over. It was my second script that I ever wrote and it was pretty popular on the game and made a whooooole lotta PC money for my company. I had fun writing it and I had fun making the website and stuff for it, too.
So there's the full answer on what's going on with that RttL 'movie'.
Again, sorry for bringing back up an old thread, but wanted to clear this up!