ACE – the Advances in Computer Entertainment Conference – has become the leading scientific forum for dissemination of cutting-edge research results in the area of entertainment computing. Interactive entertainment is one of the most vibrant areas of interest in modern society and is amongst the fastest growing industries in the world. ACE 2012 will bring together leading researchers and practitioners from academia and industry to present their innovative work and discuss all aspects and challenges of interactive entertainment technology, in an exciting emerging world environment of Nepal. ACE is by nature a multi-disciplinary conference, therefore attracting people across a wide spectrum of interests and disciplines including computer science, design, arts, sociology, anthropology, psychology, and marketing. The main goal of ACE is to stimulate discussion in the development of new and compelling entertainment computing and interactive art concepts and applications. All ACE participants are encouraged to present work they believe will shape the future of the industry, going beyond its established paradigms. This is the 9th ACE conference, and the first time that such an entertainment computing conference is being held in the emerging world. Our theme this year is “Entertainment for the Whole World”. We wish to strike discussions and projects which will benefit the emerging world through digital entertainment. For example, youth in emerging markets can become creators as well as consumers of digital entertainment. They can distribute their work through apps and internet, and through media creativity benefit their country and economy.