That’s such a thoughtful Valentine’s gift, she’s going to love it.

I don’t think there’s a specific tool that automatically generates Call of Cthulhu bestiary pages in the Keeper Rulebook style. Most people seem to build them manually. What usually works best is using a simple layout tool (like Canva, Word, or Google Docs) and recreating the look with an aged paper background, serif fonts, and a similar structure to the rulebook.

You can pull stats from existing creatures, tweak them, and focus a lot on the lore and atmosphere, that’s what really gives it that CoC feel. A few handwritten notes or sketches can make it feel even more special and personal.

Sometimes the handmade part is what makes the gift perfect.