The game is played from a third-person perspective and its world is navigated on-foot or by vehicle. Throughout the single-player mode, players play as Niko Bellic. An online multiplayer mode is included with the game, allowing up to 32 players to engage in both co-operative and competitive gameplay in a recreation of the single-player setting.[b] Two expansion packs were later released for the game, The Lost and Damned and The Ballad of Gay Tony, which both feature new plots that are interconnected with the main Grand Theft Auto IV storyline, and follow new protagonists.
Supported Operating Systems: Mac OS X 10.5.8, Mac OS X 10.6.2 Snow Leopard
Supported Processors: Intel Core 2 Duo Processor or higher. This game will NOT run on PowerPC (G3/G4/G5) based Mac systems (PowerMac)
Memory: 1GB RAM
Hard drive: At least 9GB of free Hard Disk space
Graphics: ATI X1600, NVIDIA 7300 GT or Intel X3100 integrated graphics chip