Though I have never played The Lurking Horror, playing this unofficial sequel was really really fun. To my knowledge the concept is quite original: You have 9 moves to finish the game, before something bad happens. However, you need to play the game over and over to obtain the necessary knowledge needed to succeed.
The puzzles are great and are solved by casting spells. To begin with they are quite easy but later on they get a bit tricky. For my taste the difficulty level was just right.
The implementation seemed flawless and the atmosphere was fitting. I can't really say anything bad about this game, so I higly recommend this one.