We're launching an Expanded Rule Book with four short adventures and The Encyclopedia Monstergoria, an Attenborough-esque look at the monsters in the world of 321RPG as seen through the eyes of the people who chronicled them.

The Comet Codex is a PDF bestiary including 50 creatures and a set of 8 epic miniatures to bring the terrifying creations of The Comet Lord into your 5e D&D game.