Gamedaily writes: "GTA IV's multi-faceted multiplayer mode has it all, from standard team deathmatch to co-op cops-and-robbers.
Yes, you heard right. Grand Theft Auto IV will let you take on Liberty City solo or with up to sixteen players online. Outside of some limited co-op play on Grand Theft Auto: San Andreas and multiplayer on a few PSP version of the game, this will be the first time that a GTA game dedicates itself to a robust online gaming experience.
We played through four of the more than a dozen multiplayer modes (the final number won't be officially revealed until the game ships) at Rockstar's NYC headquarters, and while the controls aren't fine-tuned for hardcore online fraggers, the average Joe will most likely find themselves sucked in for days on end, once the game ships on April 29."