Board Thread:Questions and Answers/@comment-26632129-20160912130502/@comment-27634852-20160912132951

I do think you will end up spending some money if you keep playing. There are lots of things you can do without spending if you take the time to let things breed, and save up diamonds. If you don't mind spending a few dollars on occasion, keep playing. However, even some of the more expensive things, like the Wubbox, doesn't  have to cost money, if you take the time to save up for it,  (quit baking until you have enough coins)  and then filling it with monsters, slowly.

The new islands do cost diamonds, but again, if you take the time to save up, you could use your daily diamonds, and tribal diamonds to get them.