The Grand Theft Auto series belongs to a genre of free-roaming role-playing video games called open world games, and grants a large amount of freedom to the player. Traditional action games are structured as a single track series of levels with linear gameplay, but in Grand Theft Auto the player can determine the missions that they want to undertake, and their relationship with various characters are changed based on these choices. Influenced by the earlier game Turbo Esprit,[54][55] the cities of the games can be roamed freely at any point in the game, and are examples of open world video game environments which offer accessible buildings with minor missions in addition to the main storyline.