A system for composing or modifying a virtual reality experience sequence, said virtual reality experience sequence comprising on the one hand several locations linked together, a link between two locations being operated by a navigation node, and on the other hand media contents linked to the locations, a link between a location and a media content being operated by media nodes, said system comprising: - a module for composing a virtual reality experience sequence, - a configuration file or a set of configuration files comprising: ∘ at least one scene characterized by primary scene fields, said primary scene fields comprising a unique identifier of said scene and an access means to an environment media file representing a location, ∘ at least one navigation node characterized by primary navigation fields, said primary navigation fields comprising a unique identifier of a departure scene, a unique identifier of an arrival scene, a position of the navigation node in the location of the departure scene according to a spherical coordinate system (O, x, y, z) and a transition rule, ∘ at least one media node characterized by primary media fields, said primary media fields comprising a unique identifier of the scene on which the media node depends, a position of the media node in the scene location comprising the media node according to a spherical coordinate system (O, x, y, z), an access path to a content media file and a control rule, and - a device including media files, said primary fields (311, 321, 331) being associated with data elements defining a value of these primary fields (311, 321, 331), said module for composing a virtual reality experience sequence comprising a recording device provided with rules allowing it to record the data elements in the configuration file or the set of configuration files, said data elements at least partially defining the composed or modified virtual reality experience sequence. - a module for composing a virtual reality experience sequence, - a configuration file or a set of configuration files comprising: ∘ at least one scene characterized by primary scene fields, said primary scene fields comprising a unique identifier of said scene and an access means to an environment media file representing a location, ∘ at least one navigation node characterized by primary navigation fields, said primary navigation fields comprising a unique identifier of a departure scene, a unique identifier of an arrival scene, a position of the navigation node in the location of the departure scene according to a spherical coordinate system (O, x, y, z) and a transition rule, ∘ at least one media node characterized by primary media fields, said primary media fields comprising a unique identifier of the scene on which the media node depends, a position of the media node in the scene location comprising the media node according to a spherical coordinate system (O, x, y, z), an access path to a content media file and a control rule, and ∘ at least one scene characterized by primary scene fields, said primary scene fields comprising a unique identifier of said scene and an access means to an environment media file representing a location, ∘ at least one navigation node characterized by primary navigation fields, said primary navigation fields comprising a unique identifier of a departure scene, a unique identifier of an arrival scene, a position of the navigation node in the location of the departure scene according to a spherical coordinate system (O, x, y, z) and a transition rule, ∘ at least one media node characterized by primary media fields, said primary media fields comprising a unique identifier of the scene on which the media node depends, a position of the media node in the scene location comprising the media node according to a spherical coordinate system (O, x, y, z), an access path to a content media file and a control rule, and - a device including media files,