Grand Theft Auto IV is the first game in Rockstar Games' Grand Theft Auto console game series to feature a multiplayer option. Up to 16 players can play simultaneously in one of 15 multiplayer modes, including an open-ended version that enables players to drive around the city hunting one another. All the multiplayer modes operate on the same Liberty City map as the game's main single-player storyline, a format Rockstar first employed on the PSP Grand Theft Auto games.

Multiplayer games and competitions are either team-based or time-based, and are either cooperative and competitive. Team games send groups of players into pre-set missions in opposition to one another. The "Cops n' Crooks" game, for example, tasks a group of Crooks with bringing their Boss to safety, while a different team of Cops must find him and kill him. A "Turf War" game is essentially the GTA version of schoolyard favorite Capture the Flag. Race games are either traditional, Point A to Point B races or "Cannonball Run" races, in which multiple checkpoints must be reached in any order the player chooses.

These multiplayer games will also feature characters that users can customize, altering the characters' sex, race, hair and clothes.

1. Hangmans Noose
2. Car Jack City
3. Bomb da Base
4. Bomb da Base II
5. Mafiya Work
6. Team Mafia Work
7. Deathmatch
8. Team Deathmatch
9. Turf War
10. Cops n' Crooks
    • One for All
    • All for One
11. Race
12. GTA Race
13. Deal Breaker
14. Free Roam
15. Co-op Campaign

Grand Theft Auto IV is the ninth entry in Rockstar's Grand Theft Auto series of violent, nihilistic action/crime games. This time around, Serbian immigrant Niko Bellic rises through the Liberty City underworld while posing as a taxi driver. New features in this game include a more detailed, interactive setting, the ability to target victims and even specific body parts carefully, and side missions with optional mini-games like pool and darts.