This is one of those games that I'm impressed by, but just doesn't grab me. I've tried to play several times and while I can see why people enjoy it, it's just missing the mark for me personally. It has a hugely detailed system for animal welfare and happiness, and a very flexible building system for habitats. There's also all the normal building simulation stuff like staff management, utilities, research etc. It also has campaigns and multiple free-build options. If you're interested in Zoos and want a detailed simulation experience, I can recommend it. For me, I think I was just worn down by the controls and menus. Trying to find what you're looking for and build it is a bit pretty clunky.