So. I have a cool level up trick that WORKS! I was level 18 forever it seemed and needed xp points so I bought the air trees, at least 50 of them, they each notched me up a bit and they don't take up much room on the islands. Then I sold them to make back half the money to buy more. Now I am level 19. I figured out that if you breed eggs and sell them while they are in the nursey you get xp points, but of you place them in a habitat and then sell them, you do NOT get xp points to level up. This is good, because all my dragons are levels 10. And I have one or more of every dragon and secret dragons, so my habitats make large amounts of coins and I don't have to sell a high level dragon for a new baby dragons.... Try it!