Advanced Dungeons & Dragons & Weird
In the Old School Renaissance, the truth is that Advanced Dungeons & Dragons does not get as much love as other versions of the classic fantasy RPG. The problem is that Advanced Dungeons & Dragons is the more complex than the other versions of the classic fantasy RPG, it is not as flexible, and it shows its wargaming roots more clearly. In comparison, both Dungeons & Dragons and Basic Dungeons & Dragons are simpler, more malleable, and have proved the easier basis for multiple Retroclones, from OSRIC and Swords & Wizardry to Labyrinth Lord and Lamentations of the Flame Princess Weird Fantasy Role-Playing. Yet this does not mean that Advanced Dungeons & Dragons has not formed the basis for Retroclones, most notably Advanced Labyrinth Lord and Astonishing Swordsmen & Sorcerers of Hyperborea. The former is a close emulation of Advanced Dungeons & Dragons, building from Labyrinth Lord, whilst the latter is not just an emulation of Advanced Dungeons & Dragons, but also a development of it, both in terms of mechanics and setting.