No. The screenplay was written by Jim Henson, Dennis Lee, and Terry Jones.
No, it is an original screen play. However a novelization of Labyrinth was created based on the movie, that goes more into depths about certain things not fully explored in the movie. It is out of print, and difficult to obtain a physical copy of it, but I will include a link below to where it can be read online.
Unknown there has been no information about a battle of the labyrinth movie so there is no way to know until later days/years(possibly)
The movie "Hanna" is not based on a book. It is an original screenplay written by Seth Lochhead and David Farr.
"One Day" came from the book of the same title, by David Nicholls.
The creators of the film are currently working on the sequal to The Dark Crystal. They have said that when they were done they would consider a sequal to Labyrinth. For an unnofficial sequal look for "Return to the Labyrinth" a manga book series by TokyoPop
The book was based on a dream, and the movie was based on the book, so yes, the book and movie were based on one dream of Stephanie Meyers.
The Last Olympian is the book after the Battle of the Labyrinth.
No, they made a comic book, 'Return to Labyrinth' but never made a film from it
Crazies is a remake from an early seventies film, this book seems to be similar to the movie.
No, but they did make a movie based on the book (The book came first).
It's not based on a book.
There is no movie based on the book Rules by Cynthia Lord.