The bad things outweigh the good things so deleting after two days. Not only do you have to wait forever to keep building but on top you have to watch an add for pretty much everything. Half of the time the ads won't even load and you get nothing. Four different kinds of "currency" so sooner or later you're expected to invest real money to progress. The only good thing are the penguins, however, the option of having a polar bear as "pet" is wrong. Just wastes battery and time.