Innovative interface and a deep history
Armed with your spell book now you at least have a clue on what do you need for the next step on the history, and a great history is what this game offers.
You really don't know until the end whats gonna hit you!
I guess it take years to do a worth playing adventure game and maybe We will have to wait a couple of years more until another good adventure game is released.
I just have to complain in the mistake of mostly adventure games being so linear without alternative endings that increase their replayability, but as a most of then this is like reading a good book with you playing it.
So if you like adventures games with a deep drama and study on science and magic you sure must own this one!