I'm lucky to own this game.
Until now I played it only two times but from the beginning its obvious, that:
Game is good. Really good.
First impression: Chaos in the Old World
on heavy steroids mixed with El Grande
and flavoured a little bit with Dominant Species
Game isn't too complex - in a good way. It's strange, becouse it sounds like it has tons of little paragraphs, rules and exceptions.
I think, it isn't more complex than Game of Thrones or Chaos.
Game is amazingly fast for a game which tastes like this one.
With 3 ppl we played 1,5-2 hours.
Reports from others says about 2-3 hours with 4 players.
It's so full of decisions and tension, that after a first game I felt like after 3-4 hours of play. It was realy unexpected, when we realized that it took us only 2,5 hours from the beginning of explain the rules to the end scoring.
It's (with one exception: initiative truck) easy and slighty fast (20 mins?) to explain, thanks to good iconography of actions on the board.
Universum of Midgaard (from the book) is very well adopted into game.
It seems, that game is balanced (every player have a chance, every win condition is in range). In Chaos (without expansion) Khorne always played on the Wheel, Nurgle always gathered points. In this game it isn's so obvious.
Game looks really grest - especially with full package of minis.
RuleBook... well, it isn't good.
It's not bad either, but it leaves some unanswered questions in specific (rare, but possibly) situations which may appear on the board.
We alredy have a FAQ in polish.
I'm sure, that answers from our FAQ will be included in rulebook to 2nd edition.
Unfortunately my english is too bad, to write you a review.
But I hope, that someone more talented do it for you