Computer game has become one part of our life. Past decade has witness significant and fast advance in computer game technology. This book contains the proceedings of The Fourth International Conference on Games Research and Development 2008 (CyberGames 2008), hold at Beijing Normal University from October 27 to 30, 2008. This is an annual international conference series to provide an international forum for researchers and developers in computer game technology field to exchange new ideas and share up\|to\|date development. The book contains a collection of wide topics in computer game field, like computer graphics and imaging fundamentals for games, computer game individuality, applications of computer game technology, etc, which reflect the newest development and potential directions of computer game technology. This book is intended for students who are studying a course in computer game technology. It is suitable as a reference book for researchers and developers who are working in the area. We wish to thank all authors and keynote speakers for their contributions. We thank the advisory committee, program committee, and all BNU staff and the student volunteers for their effort in one way or other. We are special grateful to National Science Foundation of China and Beijing Normal University for their financial support to make the conference successful. We would like to express our deep appreciation to ACM SIGGRAPH and SIGCHI for their sponsoring.