What Are the Two Things That Will Get a Book?

When you have games that have meaningful education in them and people are having fun doing them or really enjoying what they're doing, it's a wonderful thing. But the rewards for when you get it right are just absolutely incredible. I'm actually working on a second book right now with Barbara Chamberlain, we're writing a book about educational game development. We do have some pretty good momentum, but pretty soon we're going to have to set some good deadlines for ourselves.