The Dragon Gemstone

The Dragon Gemstone is a book published in 2002, and is aimed at ages 14-25.

Creation
This book actually started to get worked on in 1995, But in 1998, A lot of the community of PteroLands complained that it was too hard, so they redo'ed the book in 1999. It also got made into a movie in 2008.

A beta variant called Amedrag was published in June 2000.