We are pleased to present this e-book of the World Journal of Science, Technology and Sustainable Development (WJSTSD) entitled, Gamification, Serious Games, Simulations, and Immersive Learning Environments in Knowledge Management Initiatives.This e-book of WJSTSD covers a wide range of dimensions and perspectives. The objectives are to review the emerging trends and cases where GAMING, SIMS, SGs, ILEs, VR, and AR are applied to the deployment of knowledge-based initiatives. The impact within KM initiatives will be described in terms of knowledge acquisition, capture and creation, knowledge organization, knowledge stewardship, knowledge storage, knowledge sharing, knowledge mobilization, knowledge diffusion, and knowledge preservation/archiving.