Crypt of the Shadow Lord is a short solitaire adventure for
Labyrinth Lord and the first product from DPC-RPG Games (which I'm guessing are the initials of the author, David Cronin). D&D actually works fairly well as a solo RPG. But what it doesn't really do is work well as a single character game. Perhaps because of this, solitaire adventures have always been rare, especially so among the OSR. (Note that Kevin Crawford created rules to address this problem).
The premise of the adventure is pretty much stated in the title. You play a 1st level cleric sent on a mission to investigate a crypt and rescue a missing farmer. It follows the basic
Choose Your Own Adventure structure, you start at entry 1 and then are directed to read other numbered entries, based on your choices and your die rolls.
