Discourse of this paper is promotion of video games using social media on the case study of S.T.A.L.K.E.R.2. video game. Work is summarized in eleven chapters. The connection between social media and promotion is being looked into. Hypothesis’ assume that it is necessary to use social media in order to achieve marketing goal. Target audience is easier to get through activity on social media than using mass media. At the same time they serve as a very important source of information that society can use to satisfy their need for information. Hypothesis is based on uses and gratification theory. Theory explains how people tend to satisfy their certain needs using media of their own choice. One of those needs is the need to be informed. Thesis continues with a short description of video game history. In the next chapter is discussed about social media and how they incurred. Continues on with a chapter about marketing and social media and their beginning. Next comes the case study. It begins with a summary of all S.T.A.L.K.E.R. video games. Afterwards comes the case study analysis based on the questionnaire and their recipients. The results of the questionnaire are interpreted and that’s the way to get to the conclusion of this work.