The player decides himself what to do at this very moment. The GTA series is characterized by a great degree of freedom. There are also additional missions like learning to control a flying vehicle or even dating a girl, but they aren’t obligatory and can be performed between the main quests. As an alternative time passing, you can make money as a taxi driver, fire fighter, police officer, ambulance driver, street racer and so on. Mostly those are bank robberies, assassinations and other criminal deeds. The leaders of the gangster world will give you various assignments and missions that you need to accomplish to unlock new chapters of the game. As the story proceeds, he gets higher and higher on the mafia career ladder. So, the player is offered the role of a beginning criminal in a big city.
In the end, the hero triumphs over his enemies and gets his revenge. That serves as a motive to move up the career ladder.
The most widespread storyline of Grand Theft Auto games puts you in a position of a hero that was betrayed or left out to die by one of his friends, or experienced a big failure of some other sort.
