The Smoking Pillar of Lan Yu is a free OSR module for low-level adventurers from Kevin Crawford of Sine Nomine Publishing. However, it is primarily intended as a design example for designers interested in the visual design of early 80s modules - hence the "EX" code - and includes a detailed commentary for that audience. Crawford has made it pretty clear that he doesn't consider the scenario to be "particularly compelling", but he does say that the Smoking Pillar is "complete and playable". As my target audience is the DM who feels short on time or experience, I just want to address the worth of the module as a play aid in this post.