There are a large amount of secrets hidden in Grand Theft Auto IV. Some are simple passwords, and some are Eater Eggs, and a list of them can be found below.
Passwords
Cell Phone Passwords
To use theses, pull up your cell phone in the game and dial the number.
| Number
|
Effect
|
| 468-555-0100
|
Change the weather
|
| 486-555-0150
|
Get a different selection of weapons
|
| 486-555-0100
|
Get a selection of weapons
|
| 267-555-0150
|
Raise wanted level
|
| 267-555-0100
|
Remove wanted level
|
| 362-555-0100
|
Restore armour
|
| 482-555-0100
|
Restore health
|
| 948-555-0100
|
Song information
|
| 227-555-0142
|
Spawn a Cognoscenti
|
| 227-555-0175
|
Spawn a Comet
|
| 938-555-0100
|
Spawn a Jetmax
|
| 625-555-0150
|
Spawn a Sanchez
|
| 227-555-0168
|
Spawn a SuperGT
|
| 227-555-0147
|
Spawn a Turismo
|
| 359-555-0100
|
Spawn an Annihilator
|
| 227-555-0100
|
Spawn an FIB Buffalo
|
| 625-555-0100
|
Spawn an NRG-900
|
Computer Passwords
To enter these, enter them in the URL on an in-game computer.
| URL
|
Effect
|
| www.whattheydonotwantyoutoknow.com
|
Marks all weapon, health, armor, vehicle, pigeon, ramp/stunt, and entertainment locations on the map.
|
Unlockables
Friendship Bonuses
| Name
|
Effect
|
How to unlock
|
| Boom?
|
Call Packie to make you a car bomb.
|
Gain 75% friendship with Packie.
|
| Chopper Ride
|
Call Brucie to pick you up in a helicopter.
|
Gain 70% friendship with Brucie.
|
| Cheap Weapons
|
Buy weapons cheaper from Little Jacob.
|
Gain 60% friendship with Little Jacob.
|
| Back Up
|
A car of gang members are sent out to help you
|
Gain 60% friendship with Dwayne.
|
| Free Ride
|
Have a Taxi sent for you.
|
Gain 60% friendship with Roman.
|
Easter eggs
Heart of the the Statue of Happiness
If you are legal to go to Happiness Island (steal a helicopter and fly there). Go to the feet of the statue of happiness and jump off; if you land on the top platform, then run to the doors and you will run. Climb the ladder and you will see a beating heart with chains on it. This is the heart of the statue of happiness.