Designing Gamified Systems is a fundamental guide for building essential skills in game and interaction design to revitalize and re-imagine real-world systems¿from cities and corporations to schools and the military. Brought together here for the first time, leaders in the field like Katie Salen, Nicole Lazzaro, Patrick Jagoda, Ken Eklund, Rajat Paharia and Sebastian Deterding explain how they are redefining the job of the game designer. Author Sari Gilbert develops a set of core principles and tools for using game thinking and interactive design to build motivation, explain hard concepts, broaden audiences, deepen commitments and enhance human relationships.