Abstract: A system for generating and synchronously executing a multiplayer scenario, in one of a virtual, mixed and augmented reality environment and having a visual programming module allowing generation and management of at least one of an asset of a scenario and a visual acyclic relation action graph defined by a plurality of nodes and a network module configured to connect a plurality of clients over a network for synchronized execution of the nodes of the acyclic relation action graph. The network module operates using a network protocol including an identity component including a unique asset identifier and an asset container for each asset of the scenario and being replicable on the plurality of clients; and a node component defining a unique node identifier and a node container for each node of the visual acyclic relation action graph and being replicable on the plurality of clients.