Due to strong budgetary restrictions on the one hand, and increasing citizens' demands on the other, e-government initiatives often represent a combination of prestige projects and financial necessity. However, to transform e-government initiatives from ambitious ideas into fruitful outcomes, several success factors have to be considered that vary from case to case, depending on the structural characteristics of the social, cultural, and political environment. Based on the e-government implementation success framework of and a case study of e-government implementation in the Kingdom of Saudi Arabia, this research extends the view of e-government implementations by focusing on the themes culture and demography and develops critical success factors subordinated to these themes. These include five factors determining the cultural component and four factors determining the demographic component, each of which influence the respective success or failure of large e-government projects.