This is one of those games that looks complicated until you start playing. I was one of the Kickstarter backers, and was a bit unsure of the suitability of the game for casual play.
After 22 plays and counting with many different people, I can safely say that this isn't too hard to grasp. Essentially, your turn boils down to picking 1 of 4 (or 5) different actions, over and over again. Compared to Terra Mystica, this game is much easier to learn.
I will add that Jamey, the designer, has perfected the Kickstarter process for board gaming. He has a book and tons of free articles on his site - I'm a fan of his book here: http://stonemaiergames.com/kickstarter/book/
After 22 plays and counting with many different people, I can safely say that this isn't too hard to grasp. Essentially, your turn boils down to picking 1 of 4 (or 5) different actions, over and over again. Compared to Terra Mystica, this game is much easier to learn.
If you want a succinct rules explanation, Rodney from Watch it Played has a great tutorial: https://www.youtube.com/watch?v=ffMLIL5qGQg
I will add that Jamey, the designer, has perfected the Kickstarter process for board gaming. He has a book and tons of free articles on his site - I'm a fan of his book here: http://stonemaiergames.com/kickstarter/book/