Objective mental reality is continuously expanding and changing as a result of human activity. Every new form of activity—whether everyday, professional, scientific, technological, and so on—is accompanied by the creation of new entities and their interrelations and interactions, which together shape new domains within objective mental reality (such as philately, diving, oil extraction, postal services, biotechnology). However, these domains may be reduced if the corresponding activity loses its social relevance. A good example of a distinct domain of objective mental reality is metrology, since consciousness not only constructs entities but readily invents ways of measuring them. Measurement is a mental act, even though it is typically accompanied by physical actions. A significant space in objective mental reality is occupied by the domains of game-based and literary reality, which have been created by humans on the basis of verbal conventions and cultural frameworks. Verbal constructions—the rules and conditions of particular games—constitute new conventional gaming entities in objective mental reality, along with the new relationships and interconnections between them. Constitutive rules and frameworks do not just regulate human actions in game-based reality but actually create this reality itself, along with the very possibility of action within it. Objective mental reality is shaped not only within scientific and rational contexts, but also under the influence of mass communication. Modern media often replicate the world around us in a distorted and biased manner, displacing actual reality and even generating an objective mental pseudo-reality in human consciousness.