Lauri Hosio has been making games since he discovered QBASIC with his friends in elementary school. Professionally, he's worked with web and mobile games for over 7 years.

Previously, he worked at Rovio as the acting lead game programmer on Angry Birds Friends. At other companies, he has also worked on web-based MMO games and general web development.

Before HTML5, he made independent web games with Flash that were played by millions of players. Some of his games have been published by AddictingGames and ArmorGames. Lauri currently works in Kansas City, Missouri, on mobile games and full-stack web development.

Dan Nagle has, since graduating as a valedictorian in computer engineering from the Mississippi State University in 2003, written and published apps for Android, Windows, Mac, Linux, iOS, numerous web apps, network servers, and pure embedded C. He is the author of the book, HTML5 Game Engines: App Development and Distribution, which was published by CRC Press. He has also written articles and spoken at conferences about developing websites and HTML5-based games.

For about 4 years, he owned and operated a web company that focused on website hosting and custom game development. Before that, he was an electrical engineer who developed embedded systems.

Currently, he is a senior software engineer who writes control software, web interfaces, and mobile apps for network devices that distribute HD video. He can be reached through his website at http://DanNagle.com/.

Matt Palmerlee has been developing software professionally since 2001 and has a passion for JavaScript and HTML5 game development. He built Astriarch, an open source multiplayer space strategy game, using HTML5 and Node.js. Matt has developed other HTML5 games, which were published by Mastered Software, his software development consulting company.

Matt occasionally blogs about interesting aspects of software development and HTML5 games on his personal website at http://mattpalmerlee.com/.

Leonardo Risuleo is the owner and creative director of Small Screen Design. He is a designer and developer with several years of experience in mobile, new media, and user experience. Leonardo is a highly dedicated professional, and he's passionate about what he does. He started his career in 2003, and in the last few years, he has worked on a variety of different mobile and embedded platforms for a number of well-known brands and studios. Leonardo designs, prototypes, and develops mobile applications, games, widgets, and websites.

From 2008 to 2010, he had the honor of being the Nokia Developer Champion, a recognition and reward program for top mobile developers worldwide. In 2008, Leonardo formally founded Small Screen Design (https://www.smallscreendesign.com), a design and development studio focused on mobile design and user experience. In 2015, he became Digital Champion—an ambassador for the Digital Agenda—for Squillace, to help every European become digital.