Inspired by Adventure, this fourth example game from Oscar's book has been my favorite so far.  Not only did I enjoy the increased complexity of the code, but this genre is one of my favorites on the 2600, with multiple rooms and treasure hunting.  As with the others, there were multiple bugs that I had to go back and work out due to my typos, the main one being in the cemetery where the player could not move past a certain point.  After a couple of days of looking over the code, I noticed that I typed "CPY" where it should have been "CPX".  I finished the game tonight.

The Lost Kingdom.dasm.bin