Iphone game, adventure

I have written a series of childrens books and would like to develop a game based on them. The stories center around a group of children who discover they have special powers in the dream world. I would like to use one or two of the characters in the game, to keep the scope small. It should just be something entertaining. I play games a lot and have been a game reviewer for 12 years, so to me the most important things are clean graphics and enjoyable gameplay. It doesn't have to be visually stunning. You can check out the books at [login to view URL] PM me if you have some ideas