Promises of wealth from his cousin Roman draw Niko Bellic to Liberty City, but Roman's supposed success conceals gambling debts and trouble with loan sharks. A veteran of a war in Eastern Europe, Niko is also searching for the person who betrayed his army unit.
Grand Theft Auto IV puts players in Niko's role during the single-player story, navigating the city on foot or by vehicle from a third-person perspective. The game also includes an online multiplayer mode supporting up to 32 players in cooperative and competitive play within a recreation of the single-player setting.