There's a campaign mode where you need to complete contracts and missions for three different divisions — Science, Entertainment, and Security — to unlock building upgrades and special dinosaurs like the Indoraptor.
There's no real story in the campaign mode, and it only serves to make you work to unlock all the dinosaurs you can possibly get in the game, as well as building upgrades to make your parks better.
I'd absolutely complete the campaign mode to get all those unlockable extras. That way, you can build the best possible park on Isla Nublar, the original Jurassic Park island. It's a large island with lots of open space to let your creative juices freely flow for your perfect park.
It's also a good way to learn how the game works to build your ultimate park.
You can also add genetic modifications to your dinos, like different color patterns, extended life spans, better attack or defense, and even better resistance to disease.
The more modifications you use, the less viable your dinosaur's genome becomes. You have to be careful you don't modify your dinosaurs too much if you want them to incubate successfully.
It's not a perfect game, but it hasn't stopped me from enjoying the game tremendously.
I have a few issues with the game. My main problem is that the game doesn't allow you to place buildings in certain areas due to "terrain constraints," despite the fact the patch of land I want to place the building is perfectly smooth.
I have a other minor complaints, but they shouldn't distract you. I paid $60 for this game, and I comfortably feel like I got my money's worth.
Jurassic World Evolution is out for Steam on PC, Xbox, and PlayStation 4.