I don't think multiplayer ever came or maybe it did but it was so lackluster, I didn't care.
This game gets worse the longer the years go on. I've played it again like a year ago for a good chunk of time and its ok, but its just so cheesy and frankly kinda boring. It also feels like a huge chore to go anywhere.
I would have maybe giving the game a B- when I first played it, but nowadays I give it a solid D.
I also remember the first and only time flying, I crashed into a smoldering mess like immediately. Didn't help you can only fly after beating the game(?).