Video games today have turned into an important commodity with the use of art, design, science-technology and marketing techniques together, and the target audience has constantly evolved their expectations from game producers with the goal of getting huge profits so this technology developed. One of the most important factors of this development is the environment and space design used in the game production process. "Assassin Creed Unity" is a game which is produced by using the technology in the environment and space design at a very good level. The 3-dimensional spaces used in the games, which have been modelled with great success, have recently been associated with real-world examples by directly copying the original spaces. While the player's perception of the environment and space during the game are both auditory and knowledge, which is a result of hand and eye coordination and this acquisition process is also facilitated with the guidance, instructions and directions provided by the game. The story, architectural and graphic elements used in the game made extremely important contributions to the success of the game. This significant impact has been confirmed with a survey conducted with on a number of people that is actively using video game.