The goal of this thesis is to determine how video games adhere to ethical principles. The work also deals with the concepts of computer video games and ethics. It briefly goes through the history of computer video games and talks about their growth over the years. In order to understand more clearly the importance of ethics in videograms, its meaning is defined and its principles are mentioned. After that, existing research and scientific works covering the topic of computer video game ethics are presented. The correlation of video game ethics with the influence of video games on players is explained, and good and bad examples of influence are given. The paper tries to present as many examples as possible of the influence of video games on players in order to get a broader view of the situation. At the end of the paper, a conclusion is reached by analyzing the recorded effects of video games on their players.