
TEAM DEATHMATCH
2-8 Teams
Players work as a team to rub out other teams for money - and the crew with the most cash at the end of the round wins. Take the other crew down. Remember to loot the cash dropped by deceased players. That's the way to get ahead.
TEAM MAFIYA WORK
2-8 Teams
You're a member of a crew doing contract work for the mafiya - including such plum gigs as escorting wanted men, picking up MacGuffins and stealing cars. Work as a team to complete contracts before the time period ends and get the rewards. You'll probably want to do your best to scupper the other crew's work as well. Each contract you complete gives your team cash, and the crew with the most cash at the end of the round wins.
TEAM CAR JACK CITY
2-8 Teams
Cars spawn parked around the map and the teams must steal them and take them to a drop off point. The cash teams get for dropping off stolen vehicles depends on their condition - teams get less cash the more damaged they are. The exception to this are special bonus cars, stuffed with drugs, which give a set amount of cash on delivery no matter how damaged they are. Your crew has to get hold of whatever vehicles the boss wants. Whichever crew makes the most money wins. Simple.
COPS N' CROOKS
2 teams only
A team-based mode in which the Crooks must get their Boss to safety, while the Cops have to take him down. The Boss is marked with a cross hair. This mode has two sub-modes: All for One and One for All.
In All for One, one team is made up of Crooks and a Boss, and the other team is made up of Cops. The Cops are trying to hunt down and kill the Boss while the Crooks are trying to protect him. The Cops win by killing the Boss and the Crooks win by getting the Boss safely to the getaway vehicle and escaping.
One for All is similar but there is no Boss. Here, the Cops win by killing all of the Crooks and the Crooks win by filling up a getaway vehicle with members of their team. Only 4 people can escape in the getaway vehicle. Players cannot respawn in this mode.
TURF WAR
2 teams only
A timed capture-the-base mode. There are a number of bases around the map that you have to take by standing on them for a short period of time. The more players that are on a base, the faster it can be captured. The more bases that your team owns, the faster your team's cash score increases. If the rival gang is on or near a base, you won't be able to take control of it - so do what you can to try and ... displace them. The team with the most cash at the end of the round wins.
Multiplayer - Team Modes
Main Features - GAMEPLAY

Niko can use a mobile phone to recieve calls and phone his contacts in order to arrange missions. He can also use it to call taxis and purchase weapons. The options presented on the phone's LCD are Phonebook, Messages, Organizer, and Camera. The phone can also be used to access multiplayer.
Pedestrians perform realistic actions. They smoke cigarettes, read books and newspapers, drop litter, talk on mobile phones, walk in and out of buildings, and generally act like any normal pedestrian in a real city would.
Mobile phones are a big part of Grand Theft Auto IV's gameplay. GTA IV features fifteen multiplayer modes, which can be accessed through the mobile phone. Multiplayer supports up to sixteen players, and the game modes include Deathmatch, Mafiya Work, Cops n' Crooks and Free Mode.
It is possible to surf the internet in GTA4 via internet cafés. It is available from any computer in the game, and provides a hub for all sorts of interactivity within Liberty City. There are over 100 in-game internet websites.
In GTA IV, you will gain a police wanted level for any crime that you commit, providing there are witnesses present. The police can only chase you if they know where you are, and they need to see you to know where you are. If you escape the search area marked on the radar without being spotted, your wanted level will disappear.
In terms of scale, GTA IV is about the same size as GTA: San Andreas, but the map size is considerably smaller. This is mainly due to the fact there is no desert or countryside in Liberty City. Liberty City in GTA4 is the biggest single city that R* have ever created.
GTA4 contains fifteen multiplayer modes, supporting up to 16 players. In GTA IV, the line between on- and off-mission has been blurred, and the story is less linear. It is also possible to do more than one mission at a time. For example, some missions take place over several days and may involve waiting for phonecalls or attending interviews, and you are free to carry out other business during the waiting period.
The story can be told in a number of different ways. Rockstar are trying to give people greater freedom and sense of control over their destiny. You now have a lot more choice in what you want to do.
Niko has the ability to climb and descend telephone poles, and exterior fire escapes.
Every street in Liberty City contains a street sign with a name on it.
Cars feature GPS navigation systems, which identify the best routes to take during missions, and highlight them on the radar.
Developing relationships with characters is an important aspect of the gameplay. Maintaining good relationships will provide different rewards to Niko. Niko can socialise with other characters in order to maintain a good relationship, for example they can go bowling together, they can go to the cabaret, go to comedy clubs, and go drinking together.