What I think is enlightening about this book, is that not only does it tell about the success of companies like Rovio but also their failures, and how being an appilionare is not as easy as it might seem. In this book, it tells you the FULL story of the companies that made overnight hits and legends like AngryBirds and DoodleJump, and it shocked me to know that Rovio was a failing company with over 50 failed apps under their belt before they made AngryBirds. Now, if you are thinking of making apps in the hope of becoming an appilionare, I would strongly urge you to read this book, because not only does it tell you how hard it actually is to become an appilionare, but it gives you many good tips on how to make an app better and more addictive. It tells you about consumer psychology and buying habits. Like for instance, if you were to price your app at 99 cents, you would get flooded with bad reviews, whereas if you priced it at $1.99 you would get quality, and honest reveiws because most of the people that buy 99 cent apps are expecting a lot out of that 99 cents and will write a bad reveiw if it is nothing short of a smash hit, whereas most of the people who buy $1.99 understand that this is only going to proveide a few hours of fun and write better reveiws. Anyways this is merely one example of what this book will provede you with, This book has been very enlightening and educational to myself & my sons who are interested in creating apps, it's well worth the money.