The thesis shows the development of communication between fictional characters in video games, also known as NPC – non player character. It follows the history of creation of machines (Enigma), which made the communication between a man and a machine possible. Thanks to the development of technology and codes (object-oriented programming languages based on artificial intelligence – AI), the characters in video games came to life; they have a history and can also memorize your decisions. NPC has developed consciousness, but the difference is that NPC is made out of codes and in it, it is determined in advance what it is about to say or do. In real world, it is not exactly so – one mistake can cost us life, friendship and love. Technology has come such a long way that a program named Eliza was founded. You can communicate with it just as you can with another living being. The thesis starts with a history of creation of a machine, which deciphered messages, invention of the modern machine (NPC), its creation and development, the possibility of memorizing the player's decisions; it states that evil is not always appealing and that a large number of players will choose a positive side. Also, it shows the significance of narration and communication.