This document discusses how to engage players in health games. It begins by defining what a game is, noting that games have goals, rules, feedback, and voluntary participation. It then discusses two models of player typology: Bartle's taxonomy of achievers, explorers, killers and socializers, and BrainHex's seeker, survivor, daredevil, mastermind, conqueror, socializer and achiever types. The document defines health games and categorizes them into those where gaming is the primary feature with some health impact, those focused on health goals integrated with gaming, and those where health is the primary goal supplemented with gamification. It stresses the importance of defining goals, understanding the core audience and what they value