Thank you for your comment. AdvSys is really not a problem here! :-) This system is amazingly flexible and allows to create beautiful games. I made some useful classes. I will add AdvSys source code to the uploaded files.
Of course there are a lot of other adventure systems! As for "Yesternight" I stick with AdvSys. I also like Adventure Definition Language (ADL).
The game is short and also can be used as a tutorial - like the mentioned "The Cave of Magic" from the Adventuron. My game contains 4 puzzles and 5 locations. As I mentioned, this will be extended after ParserComp.