Throughout the single-player mode, players control Niko Bellic. The game is played from a third-person perspective and its world is navigated on foot or by vehicle. The open world design lets players freely roam Liberty City, consisting of three main islands, and the neighbouring state of Alderney, based on New Jersey. Set within the fictional Liberty City, based on New York City, the single-player story follows Eastern European war veteran Niko Bellic and his attempts to escape his past while under pressure from high-profile criminals. It is the sixth main entry in the Grand Theft Auto series, following 2004's Grand Theft Auto: San Andreas, and the eleventh instalment overall. Grand Theft Auto IV is a 2008 action-adventure game developed by Rockstar North and published by Rockstar Games.