This is one of the best games of all time, it is so interesting that it keeps you hooked. There are not too many ads. It's amazing if you need a time killer, it's there and it's not just something you use to kill time, heck if you have something else to do you might play too much because you're having so much fun playing ... I love this game. It's so much fun collecting all the silly variations of known zoo animals and I love the concept of an airship / boat / zoo ride. I also love the silly design and animation of the animals. I can't get enough of those googly eyes! You do not have to pay money to enjoy this application. After a while... I love the big game, I love the concept of going out and finding things to put in the zoo. And for all the reviews that say "there are a lot of ads", just play without internet and if you want something that has internet, turn it on. Simple solution and it works for me. The app would constantly crash ... a star. Now I have a new phone, so you don't have to do your research. It was the fault of my old phones. You are great. Keep up the good work! I know everyone talks about how bad it is because of the ads, but since the only time I play it is in my car, where there is no internet and then no ads, I have never really played it with the internet.