The aviaries are an unplayable, bug-ridden nightmare. Campaign mode is basically a tutorial that is entirely too short, too easy, and utterly unsatisfying. Challenge mode requires you to relearn and unlock EVERYTHING with each park. Income tax in challenge mode is an unnecessary currency sink. Chaos theory mode is boring and the changes made to dino comfort mean that you can't house species together that you could in the first game, which in-turn means you never have enough room to house all your dinos. I really regret spending money on this worthless game.