Can't keep up with money and levels. Buying land, factories or homes is too expensive. So you get orders you can't produce for a long long time. Also... Doesn't matter how many homes, if you have two from different breeds in every one, you keep getting more homeless. I have more homeless from different animals and the same breeds as in the homes. They won't breed!!!!! So I have a lot walking around homeless, but not enough money to buy three different homes. And when you buy new homes, they will be empty when they breed again. I have 5 homes for the pigs and 2 are empty. I had to buy the fifth because the doubles wouldn't breed otherwise. Really annoying!! Upgrade now! Upgrade now! Constant waiting for everything! Takes hours/days to get enough wood. Not enough energy... upgrade now... not enough... not... so annoying