Everything we know about GTA IV to date

• We've spotted two films advertised around Liberty City: I Slept with Your Mom and Heavy Weapons X. There's also an ad hoarding in Star Junction for a TV show called America's Next Top Hooker.

• Liberty City will change fundamentally when the sun goes down - with different pedestrians, and more dangers, appearing on the streets.

• Niko won't be able to access all buildings.

• All the music heard so far is unconfirmed.

• A 'special edition' of the game will be released alongside the regular boxed versions. The special edition will include an art book, selected CD soundtrack, Rockstar keychain and duffel bag. It'll cost $89.99.