Method of simultaneous playing in single-player video games

A method of simultaneous playing in single-player games, with a storyline and narrative, realized with a use of a computer device, using at least one device for image display, at least one computer device to generate game images and at least one game controller controlled by a player characterized in that the player using one controller controls simultaneously at least two characters (1), (2), wherein each of the characters controlled by the same player acts in a different story universe simultaneously displayed in a separate viewport (6), (7), which makes a separate story universe (A), (B) and an input signal sent from the controller is transformed by a synchronization layer involving predefined modifiers different for each given story universe (A), (B), wherein

• action taken by the character (1), (2) in one story universe have consequences on character's (1), (2) functioning and development of a plot in other story universe (A), (B) generated by the game, and wherein
• an output signal executed by given character (A), (B) depends on three groups of modifiers assigned to the character, assigned to the given story universe, and assigned to the synchronization layer which synchronizes movement of all characters (1), (2).