I must admit...I played that game...and it isnt that bad(but mostly because I like city building games)..I play for just like 2 mins a day and I get how a lot of people get into it. Very simple and not too dependent on you as long as you aren't dependent on it I suppose. I haven't played Farmville yet or any other Zynga game until now so I'm guessing this is like a combination of all of their games(I mean is farming in farmville like in cityville to those that played it?). It eases stuff when it gets too boring in the office lol.
The main reason I like it though is that I named my fast food franchise "Kim Jong Il's Great Burger" I'm just waiting for the day that I'm able to serve more than McDonalds lol