This game is loads of fun but it also has some good qualities and some bad ones.
There are tons of different subspecies for almost all the different animal species. This adds to variety and immersion.
The animals all have realistic textures and animations which are also aesthetically pleasing.
There is a decent variety of concession stands
The scenery and decorations are also beautiful
The money system is believable and not overly difficult in normal mode
The overall number of main species is small. For example, while there may be at least 10 different kinds of antelopes available once all are unlocked, there are actually only 9 main animal species available (Antelopes, Bears, Elephants, etc), or at least as far as I have been able to find or unlock with no hint of anything more waiting to be unlocked. Because of this, the zoo lacks overall variety and realism or immersion. There are many more main species people would generally love to be able to see in a zoo...such as wolves, buffalo, mountain lions, mountain goats, snow leopards, crocodiles, wilderbeasts, zebras, etc. They could have and should have done a much better in depth job with the kinds of animals aavailable.
Also, the overall zoo limit is very limiting. I can only get a handful of large exhibits with medium animal population actually residing in them along with necessary facilities and concessions before the zoo limit is filled up. It breaks immersion and realism and is very disappointing, especially in free mode. It would have been much better, especially in free mode, if players could create zoos large enough to house most the available animals and concessions and a decent number of decorations.
While the animations and realistic looking animals are delightful, and building your own zoo gives hours upon hours of fun, it is still rather disappointing to be so limited in the number of available main animal species and the overall zoo limit. This game needs a patch that removes the zoo limit and adds more main animal species, or if total removing of the zoo limit is not possible, then at least increase the zoo limit for players and add more main species.