I was a kickstarter backer of this project - I had no knowledge of Midgard or Pathfinder (I'm a 1e/4e D&D DM only...) but knew of the quality of Open Design products and have been looking for more inspirational creatures for my game.
The Midgard Bestiary for 4th Edition D&D is an AWESOME resource for DMs to fill in creatures with slightly different flavor from the typical WotC monster fare, without going completely bonkers like the original Fiend Folio sometimes did. I really like the large number of mechanical creatures in this tome, along with close cousins to the usual types (Dragons, Centaur, Minotaur, etc.)
I can't wait for my print edition to arrive to drool all over the amazing artwork on almost every page...
[5 of 5 Stars!]