Though Rockstar had previously confirmed rumors of online multiplayer, it had yet to specify any other details.

The various modes encompass a number of team and solo-based game types, including Cops'N Crooks, Deathmatch, Team Deathmatch and Race, all set within the same maps as the single-player game. Prior to hopping online, players will be able to customize the sex, race, hair, and clothes of their virtual avatar.

Each mode will present hosting players with a number of relevant game-altering options, such as the ability to toggle police involvement, traffic density, and weapon selection. Cops'N Crooks pits a team of cops against a team of robbers, while the Mafia Work game types has players racing to complete various assassination missions.

Grand Theft Auto IV arrives on PS3 and Xbox 360 on April 29. A list of the known game types follows:

• Deathmatch
• Team Deathmatch
• Race
• GTA Race
• Mafia Work
• Team Mafia Work
• Turf War
• Cops'N Crooks
• Deal Breaker
• Hangman's NOOSE
• Car Jack City
• Bomb da Base II
• Free Mode