This is a book I contributed to and which you can pick up at the Zenith Games site, the Paizo site, or RPGNow. It contains 81 colossal creatures (including my contribution, Furnace Mother), written by a variety of talented designers. It was an honor to work with so many cool people, and I’m really proud not just of my contribution but with the book as a whole.
It’s for the Pathfinder Roleplaying Game, but you could pretty easily convert anything in here to TBH or any other OSR game if you don’t play Pathfinder. I think creatures like this (especially those with the kaiju subtype) are kind of underrepresented, and I think you can get a lot of use out of them if you build a campaign around them.
It’s really cool that it came out when it did, as I got the email saying that it was live while I was in the theater to see Shin Godzilla, so that was pretty awesome.
Artwork: cover art by Dean Spencer, from The Colossal Creatures Bestiary, by Jeff Gomez et. al, 2016.