Building a dinosaur park is arguably a ridiculous idea, first and foremost, because, even if these creatures have existed, re-creating a full genome from petrified remains is as absurd as finding canned mosquitos from sixty million years ago. It's not going to happen. If DNA science would be capable of such a thing, we would already be eating mammoth ribeyes for dinner.
With this in mind, I love dinosaurs in a fantasy context, but I adore them in pseudo-scientific setting, especially if the product in question doesn't take itself seriously. So when I saw a red velociraptor hopping like a sheep with its upper lip dangling in the wind and a narwhal horn upon their head, I said, "I must play this game!"
Admittedly, Crazy Dino Park is a dirty-rotten-money-grabbing freemium. But the premise is very engaging. You go on bone digging trips, assemble the finds into skeletons, and voilà! Your park's got a new resident reptile. Digs are very costly, and it will seldom reward you with a complete dinosaur skeleton. However, it is the only way of increasing the number of dinos in your park.
The animals that you've collected will slowly bring in visitors, who tend to drop coins from their pocket from time to time. But brand new species will always attract a crowd and boost your popularity level and income considerably.
Here's where the collecting game comes with a twist. When you manage to revive two specimens of the same species, you can (and probably should) combine them to form a more impressive looking member of the species. Doing this creates more space in the enclosure, and it will increase your park's popularity, just as if you added a new animal. Also, if it's the first of its kind, you will attract a crowd again and get another surge of coins.
Staying around and looking at park guests is one way to make money. You must tap on the dropped coins without much delay, lest they will disappear. However, you also have a ticket booth, which accumulates coins automatically over time, depending on your popularity.
There are more things to spend money on besides digging. As your popularity rises, you will unlock more features, such as expeditions, park beautification, and even dinosaur fights!
Crazy Dino Park is a reasonably solid entry. Even though the paywall may come sooner than you might want, the app is mostly devoid of any ad (the only one that I noticed being optional). Just make sure you stay online while playing, otherwise the game timer might not have advanced during downtime.