Grand Theft Auto (GTA) IV takes advantage of Natural Motion’s Euphoria engine, which consists of artificial intelligence, bio-mechanics and physics to make open, non-linear environments which provide the players to explore and choose on how they want to play the game.Įven though the storyline missions are necessary to progress throughout the game and to unlock various content and parts of the city, they are not to be completed, as the player can complete those missions whenever he wants to complete.īut to play the game in PC, it needs an active internet connection and an account which is at the game’s official site, to save the game.
