No, it's standalone. From Steam it's roughly a 14GB download. The pack is quite honestly a great standalone game all in its own right. I own this for the 360 and have or a while and I'm enjoying it all over again on the PC now.Does it require a standard GTA4 installation? Because from my memory the goddamn installation took me like 2 hours because it was a) so big b) you had to register on 3498239 services.
I play em in english, if I can.Masta, why... oh why... do you always use the German translation?
Don't know what it's like for you Germans, but Dutch translations and voice-overs are always so bad. I've played English games since I was 5, I can't imagine ever playing the localized version.