Chapter 1 Introduction.- Chapter 2 Literature Review.- Chapter 3 Research Design and Analysis Method.- Chapter 4 Overview of the Chinese Game Industry and Online Game Development.- -Chapter 5 Quantitative Analysis of Continuous Product Development.- Chapter 6 Management of flexibility in continuous product development.- Chapter 7 Management of exhaustion in continuous product development.- Chapter 8 The impact of user interactions on freemium game performance.- Chapter 9 Conclusion