Yeah, it's not like the old Settlers much. It's kind of similar to the latest Settlers game in that some of the graphics are similar/same. But like Riker said, it's a lot of waiting around. That's why I'd call it a lunch game. I actually keep it up all day (unf) to update my mines and shit, but you don't need to.
It's not much of a game unless you're doing adventures. And even then it's not much of a game since you can just go get the guides or run the trainers to see how many troops you need.