Under the term “Artificial Personality”, this thesis presents a new system for the simulation of personality in video games, which enables not only more credible NPCs but also more dynamic gameplay. For this purpose, the functioning of the system and the integration of the ocean-model from personality psychology is explained, and a type of implementation is presented. Video clips demonstrate the dynamic gameplay, which is created purely by the different personalities of the NPCs. This work offers a new basis for research in the field of personality simulation in interactive media and serves as an inspiration for the integration of personality in commercial video games.