Project Nemesis is a fan driven website for games that use the One-Roll Engine (like Nemesis, Wild Talents, Reign and Monsters) or Chaosium's Basic Roleplay System (BRP) (like Call of Cthulhu) and the Delta Green setting.
The Black Icons tell the story of Semyon, a Christianised Rus monk who was proselytising along the southern Volga River circa 1220 A.D., during the decline of the Kievian state.