Abstract: This article is dedicated to the relevant problem of cultural philosophical study of the phenomenon of videogames. The subject of this research is the virtual world of videogames. The authors analyze the essence of the notions “virtual”, “virtual reality”, “virtual world”, “and virtual world of a videogame”. The work presents the results of the conducted analysis of the foreign and Russian literary sourced, dedicated to the questions of examinations of the virtual worlds. The author trace the evolution of the notion “virtual world” within the scientific literature, as well as formulate a generalized definition of the virtual world as a computerized three-dimensional or two-dimensional environment that simulates the real world, and in which the users represented by the avatars are capable of synchronized and simultaneous communication. It is noted that the ability of implementation of a similar definition in examination of the non-computer virtual worlds is limited within the cultural philosophical aspects. The scientific novelty consists in the fact that for the first time the definition of the “virtual world of a videogame” is being formulated. The work also gives definition to the notion “virtual world”, which can be applied not only to a cultural philosophical research of the virtual worlds constructed by videogames, but also to the analysis of the essence of the virtual worlds of non-computer origin.