Game got few AI directors (some more are downloable as mods) which got few settings, but their description are easy to decode.

If you like complicated games, this one is for you. As you get more people and more advanced research, you'll encounter more problems, with a lot of things to to learn from them.

There are a lot of mods, some simple like new clothes or hairs, but there are more races, facilities, even features and helping addons like Moody.

For it's complex gameplay, the UI is quite simple. Yes, for beginners it could mean information meltdown, but after an hour or so you should know where to find everything you need.