I would like to thank Manning Publications for giving me the opportunity to write this book. The editors I worked with, including Robin de Jongh and especially Dan Maharry, helped me throughout this undertaking, and the book is much stronger for their feedback. Candace West took over as primary editor for the second edition. My sincere thanks also to the many others who worked with me during the development and production of the book.

My writing benefited from the scrutiny of reviewers every step of the way. Thanks to Alex Lucas, Craig Hoffman, Dan Kacenjar, Joshua Frederick, Luca Campobasso, Mark Elston, Philip Taffet, René van den Berg, Sergio Arbeo Rodríguez, Shiloh Morris, Victor M. Perez, Christopher Haupt, Claudio Caseiro, David Torribia Iñigo, Dean Tsaltas, Eric Williams, Nickie Buckner, Robin Dewson, Sergey Evsikov, and Tanya Wilke. Special thanks to the notable review work by technical development editor Scott Chaussee and by technical proofreader Christopher Haupt, with René van den Berg and Shiloh Morris stepping into those roles for the 2^nd edition. And I also want to thank Jesse Schell for writing the foreword to my book.

Next, I’d like to recognize the people who’ve made my experience with Unity a fruitful one. That, of course, starts with Unity Technologies, the company that makes Unity (the game engine). I am indebted to the community at gamedev.stackexchange.com/; I visit that QA site almost daily to learn from others and to answer questions. And the biggest push for me to use Unity came from Alex Reeve, my boss at Synapse Games. Similarly, I’ve picked up tricks and techniques from my coworkers, and they all show up in the code I write.

Finally, I want to thank my wife, Virginia, for her support during the time I was writing the book. Until I started working on it, I never really understood how much a book project takes over your life and affects everyone around you. Thank you so much for your love and encouragement.