Pacific City is a sprawling metropolis spanning eight or so main islands. You can go from one side of the city to the other without seeing a single load screen (well, okay there is the first one when you start the game) and the way the distant buildings and landmarks start off looking like blank blocks whose details slowly fill in as you get closer just helps to give you the feeling of the large world you are trying to explore and clean up.
The game's audio aspects weren't as impressive as its visual, but for the most part it wasn't bad. Gun fire, engines and background music seemed to be right on, but the most prominent audio, the narrator, quickly became one of the more aggravating parts of the game.
The narrator is, for the most part, the only voice you will hear in the game. Sure various enemies will shout obscenities at you, but he is easily the most noticeable. Unfortunately, once you have gone through about a third of the game, he doesn't really say anything new. You will hear him tell you what the various race types are, give you tips, let you know when key gang members are close and various other tidbits of information. These informative sound-clips were pretty good and dead on. I rarely had issues with them. Where I had problems were all the times the voice would say "Finest view in the city" or "That's an impressive ascent agent." This last one was particularly annoying not just because of its over-use, but because about 70% of the times it was said, I was on the ground or maybe one floor up. It just got really annoying really fast.