gabe zichermann SHOW MOOCHABLE + ? RELATED SEARCHES > ADVANCED SEARCH > SHOW COVERS + Author Copies Gabe Zichermann Gamification by Design: Implementing Game Mechanics in Web and Mobile Apps 0 Gabe Zichermann Game-Based Marketing: Inspire Customer Loyalty Through Rewards, Challenges, and Contests 0 Gabe Zichermann The Gamification Revolution: How Leaders Leverage Game Mechanics to Crush the Competition 0 Search BookMooch for a book: SEARCH BOOKMOOCH > Search Amazon for a book: amazon.co.uk amazon.de amazon.es amazon.fr amazon.it amazon.cn SEARCH AMAZON >