As to whether to give your franchise over to the movie industry, or the video game industry. Which one do you pick?
I am going to list some facts about both industries and what they commonly do when it comes to this.
1, For movies, it seems very common just to drop the author from involvement completely and utterly until the end of the making of the movie. Often times the movie is COMPLETELY different then the book... ala I Robot and the soon to be WWZ thus pissing off the fans and even pissing the original author off. If involved you will be undercut quite a bit by most everyone on set unless your name is Stephen King.
2, There is a chance you can help out a development team in making the world of the game based on your book. However they may or may not listen to you if you are dreaming to big for budget. There is a chance they won't follow the books original story but instead enhance it by creating a companion piece to it if they don't know how to create your original book into a video game. There is also a chance that almost no one will see it or the game being canned as well. Before it even freaking is announced.
Which one would you choose. I would make this a poll but I think people should know fully what they are choosing.