I think this game is super fun, super simple, and pretty therapeutic. Most other games like these usually cost a few bucks, so when i found this i was pretty impressed. However, you cant change the sandcastles, and they are all the same design. Also, the waves come too soon, so maybe you should be able to press a button for the waves to come, and be able to customize the sandcastles. Overall, a nice app to have to kill some time.