Written for Old School Essentials, but usable with anything comparable. Straight up, after my first flip through on this, it will live in the Old School Essentials Advanced Rules box once it arrives. 64 pages, and not a single centimeter is wasted. There is more information packed into this A5 book than some of my books in A4. The layout is super clean and very well organized. The art is AMAZING. Not only is this a self contained game/adventure/setting, it’s a deep toolbox for just about any campaign no matter the world you are playing in. It even includes a solo mode so you, or a DM can take it all for a spin, just for funsies, or to feel it out before running some poor saps on an adventure.

Inside you will find,

Fully fleshed out NEW CLASSES. Detailed setting information. Tons of TABLES! Gear! Magic! Monsters! Maps by the legendary, Dyson Logos! An ARMY of artists! A custom character sheet. A new ability score, WIERD! (Whaaa?!) A sample adventure! Solo mode! SEWER BEAVERS (yikes!)

This is an absolute must have if you really want to kick the doors open on your OSE games and campaigns. If you’re into the weird, the slimy, the trippy, the gritty, and most of all, FUN, Dungeon Plumbers has you covered.