Experience Isomorphy

Experience Isomorphy or experience similarity is a concept referring to the sameness of experience. Medievally inspired Video Games e.g. try to reach a high experience isomorphy with their games to what they imagine the essential Medieval experience to be. The term isomorphism literally means sameness (iso) of form (morphism). In Gestalt psychology, Isomorphism is the idea that perception and the underlying physiological representation are similar because of related Gestalt qualities. Isomorphism refers to a correspondence between a stimulus array and the brain state created by that stimulus.
A perceptive structure ‘relating to the object perceived as a whole…and not deductible from the properties of the elements of the object’[1] has been called a Gestalt-quality, a theory that arose from an attempt to explain melody as distinct from the notes.  Chords and melodies in hearing, the shape characteristics of visual objects, the roughness or the smoothness of tactual impressions, and so forth; all these are "Gestalt qualities"—have one thing in common: when the physical stimuli in question are considerably changed, while their relations are kept constant, the Gestalt qualities remain about the same.
J. von Uexküll already observed in 1928 that any Gestalt unavoidably is a result of some "Gestalt building" process ("Gestalt-gebend")" (1928, p.183).
See also: RPG; Role-Play; LARP; Cosplay; Acting; Recreation; Periodicals.
[1] I.V. BLAUBERG, V.N. SADOVSKY & E.G. YUDIN, 1977, p.224).