Rahtlü, a small farming village, needs the party's help as mysteries abound. Rahtlü bears striking similarities to another town you may have heard of — Ulthar. Yes, this town also has laws against killing those of the feline persuasion. Yes, the strange old couple inimical to the cats dwells under a large oak, but there's more to all this than meets the eye!

Cats of Rahtlü features a randomly generated hexcrawl catacomb with hexes for printing out and placing down on the table as the players adventure. Inspirations include Pickman's Model, Cats of Ulthar, The Dream Quest of Unknown Kadath by HP Lovecraft, The Charnel God by Clark Ashton Smith and How to Skin a Cat by Hüsker Dü.