I like the zoo games and thought this one would be similar to a Zoo Tycoon. I only played one story game. As you go through it, I found you have to have a second player helping you. For example the virus and fleas (bugs), you have to work as a team to complete it. Interesting game, worth a rent, but maybe not to buy.
I rented this game for the family to play and realized it was just like trauma center. I played it for 2 days and got bored with it. I wouldnt buy it, renting it would be better. We sent it back to get a better game.