The Game Maker's Companion
Game Development : the Journey ContinueseBook - 2010
You'll go on to discover techniques to add depth and believability to the characters and stories in your games, including The Monomyth, cut scene storyboarding, and character archetypes. This culminates in the creation of an original atmospheric platform-adventure which will take your GML programming skills to new heights. There's even a handy reference section at the back of the book which will be invaluable for adding common features to your own games.
With contributions from four games industry professionals and a highly respected member of the Game Maker community, The Game Maker's Companion is another labor of love that will give you even more hours of enjoyment than the original. If you already own Game Maker, then you really must own this book as well.