Master of Darkness is a role-playing game released for the Sega Master System in Europe. The game features a dark fantasy setting, and likely involves exploration, combat, and puzzle-solving.  It's unknown at this moment what specific features it offered compared to other RPGs of its era, but it's likely it incorporated aspects that were typical of its genre and platform.  Further research is required to know which developer was responsible for this title, and specifics on its gameplay and story.

Master of Darkness (Europe)

Marble Madness (Europe)