This game was entered in the Spanish division of Ectocomp as a Grand Guignol game, meaning it took > 4 hours to complete.
It is an excellently written game, using amusing and complex writing to tell the tales of a haunted castle. It has the form of a CYOA book, with different 'page numbers' references (although they aren't actually numbered). Different branching paths let you experience different monsters.
As a non-native speaker, I found a lot of words I didn't know here, as the author uses very descriptive and colloquial language. I found two monsters in two different paths. One, (Spoiler - click to show)the succubus, included some sexual scenes that were detailed but not explicitly describe sexual acts.
Once you've completed a path, the game gives you links to interesting facts about the creatures you encountered and lets you 'warp back' to a convenient place to find other paths. Overall, this was very well written.