Once in a long while, a game comes along that tries something different, and raises the bar for all that follow. While Dungeon Master is not the first first-person 3D RPG, it certainly broke the mold of its contemporaries. Just the sheer number of hint books available for it attest to its huge popularity. It was also one of the first games to sell separately a soundtrack, in this case 'inspired' by the game. It is unclear whether the poster was included in some early versions of the game, or whether it was a separate promotional copy. This is the only copy of it I have ever seen.