Love it. I'm still just blown away by DIY RPG Production's creativity. This setting would never have occurred to me in my wildest dreams. My goal will be to have all of product on my shelf, on proud display. Long may they continue!

Oh what a great book! I used this for a D&D setting when players traveled across the planes. They loved it.

GATHOX: VERTICAL SLUM is an amazing sourcebook from writer/author D.L. Johnson that can easily work in any fantasy RPG rule set, but I think it vibes best with games with a decidedly old-school bent like Swords & Wizardry, Labyrinth Lord, DCC RPG, Lamentation of the Flame Princess, or Astonishing Swordsmen & Sorcerers of Hyperborea. But I could easily see it working in Savage Worlds, 5e, Dungeon World, Numenera, or GURPS.

Basically what you have here is a massive NYC-sized walking god with a towering city built on its back. And since the walking city blips from dimension to dimension, you can easily add it to any setting you have in mind or use it as a way of getting your characters from one setting to another.

It excels at being weird. But it doesn't feel weird for weird's sake. Instead of "Here's an undead mushroom space-pirate" we get "Here's a skydiving cult of women that wear high-tech wingsuits that kick ass with massive two-handed swords". Instead of "Here's X'thygua, the God of Space Fungus" we get "Here's The Grand Stultified Energon, the God Which Pulses, Quivers, and Collects".

Even if you don't want to use GATHOX as a setting, it is overflowing with inspirational material that you can steal from and use in your games.

And did I mention that the art is absolutely stunning?

Seriously y'all. Check this out.