1 GAME FOR A LAUGH
There are plenty of mini-games tucked away in GTA IV. Old favourites pool, basketball and Go Go Space Monkey return, joining new games such as darts. You can even visit the driving range to practice your golf swing. For fights, of course.
2 IN FOR THE LONG HAUL
San Andreas' RS Haul is back, and some missions will be centred around it. Details haven't been revealed by Rockstar, but given Niko's history of people smuggling... well, let's just say, you can fit a lot of immigrants in the back of a lorry...
3 THE GOOD SECHS SHOW
The Gruppe Sechs securicars are back too, but this time there's a bigger emphasis on jacking them, nicking the money and destroying the evidence. Don't expect an easy ride; stealing one is a tough task, but losing the cops in the aftermath is even trickier.
4 CRACKING JOKES
The poster behind Manny is more than just a hint at a drugs-related side mission - it's a blatant nod towards fellow sandboxer Crackdown. We've also seen Crackdown's name on a news ticker, and there are plenty more references tucked away in the final game.
5 SMILE FOR THE CAMERA
We knew that the camera would return, and now it's been placed on the mobile phone. But the official website hints at something quite brilliant, and even more exciting: the ability to upload and share your pics with other GTA IV players.
6 ALL GONE TO SHITZU
Most vehicle brands will return, but we know for sure that the Stallion and the Comet are definitely in. And San Andreas' fastest bike, the Shitzu NRG500, has been bettered - the NHG900RR is now the motorcycle of choice.
7 SPRAY WHAT YOU SEE
Keep your eyes peeled for graffiti loaded with knowing winks. The red motorcycle on the left is a direct copy of the bike on the Vice City box art, while GTA 3 characters El Burro and 8-Ball are visible on the right.
8 MAP OF HONOUR
Again with the self-references. While San Andreas contained maps of Vice City, IV has actual photos. One of the first promotional shots of Vice City can clearly be seen pinned to the wall of the bar.
9 SUPER STORES
San Andreas brand names like Binco, Burger Shot, 24-7 and Clucking Bell are all back in GTA IV, along with plenty more brands from previous games. Alderney will also be the home of strip malls, providing a one-stop-shop for clothing, food and more.
10 TICKER TAPED
Rob a bank? Murder a crime boss? People are going to know about it. The news tickers in Star Junction (Liberty City's Times Square) and around the city are always being updated - along, sadly for you, with descriptions of the perpetrator.
11 COFFEE REPUBLIC
The Hot Coffee mod fiasco landed Rockstar in some hot water, but it's good to see they've seen the funny side of it. Bean Machine Coffee signs litter Liberty City. The 'familiar' positioning of the coffee beans in the logo is no accident either...
12 MAN IN THE MIRROR
Those of you who aren't overwhelmed by the graphics (seriously - what's wrong with you?) should take a close look at this. First car: driver facing forward. Second car: driver checking the mirror. Third car: driver looking out the side window. GTA IV's about the little details - and they're staggering.
13 JUST GOTTA RIDE IT
Flushing Meadows (site of the NY World's Fair) is featured in its entirety, as is a recreation of theme park Astroland at Coney Island. Rides such as the Corpse Ride and Cyclone can be tested, and the major tourist spots will play a part in some missions.
14 CANNED LAUGHTER
Mmmm. Sprunk: A Taste of (Things to) Come. The drink from Manhunt, Vice City and San Andreas is back, and for a mere $1 you can grab a can and top up your health. Even the Statue of Happiness loves a helping of Sprunk - just look in her hand.
15 PHONE SEXY
In a nod to Saints Row, any phone number you find, be it on a sign, flyer or even scrawled on a bathroom wall, can be contacted for aid and, sometimes, secrets.
16 BAN THIS FILTH!
Visit the Videogeddon Arcade to try out a number of tongue-in-cheek games, and keep an eye out for people and posters attacking violent games.
17 BAT MAN BEGINS
We all know the cops are crooked, but did you realise that they display the fact on their uniform? Take a close look at the badge this copper's wearing with pride - two cops with bats dragging off a beaten man.
18 WHAM BAM TRAM
See the sky tram on the box? It's actually a form of transport that you can ride - if you pay the fare.