| I got this a few days ago, and I'm quite addicted.
What I like most is the sea stuff. It's just fun taking over boats, battling old school style with large ships and such. The damage is nice, and makes things quite strategic.
The game as a whole is largely based off of mini-games. It's not "completely free" in that respect (i.e. not a sandbox game), but you can still do whatever you want when you want. So, in that respect, it is pretty wide open.
I'll just leave it at I'm addicted. I've put in a good 6 or 7 hours at this point, and it's easy suddenly realize that I've wasted an hour of time when I should be concentrating on pooping.....err, doing other stuff. | 
