Online games satisfy the basic requirements of learning environments and can provide engaging learning experiences for students. However, a model that successfully integrates educational theory and game design aspects do not exist. Thus, in this paper an experiential gaming model that is based on experiential learning theory, flow theory and game design is presented. The model stresses the importance of providing the player with immediate feedback, clear goals and challenges that are matched to his/her skill level. The flow theory is used as a framework to facilitate positive user experience in order to maximize the impact of educational games. Especially, the factors that contribute to flow experience are discussed. The experiential gaming model can be used to design and analyse educational computer games. However, the model works only as a link between educational theory and game design and does not provide the means to a whole game design project. (Contains 3 figures.)