A downloadable game

Buy Now$5.95 USD or more

This unofficial supplement contains one organisation, four landmarks, six fallout options specific to two of the landmarks and several plot hooks for you to use in your game of Heart: The City Beneath. It is not a standalone game and requires a copy of Heart: The City Beneath to play.

  • The Order of Sanguine Sorcerers, a group who believe that you can use the flow of your own blood to map the Heart, and their headquarters Sacracordia
  • The Super Wonder Gallery, a cursed place of creation where physical manifestations of art take on lives of their own
  • The Galactic Cake, an endless landscape of stars where you can walk from point to point to create your own constellations
  • The Stables, a mysterious and ghostly tableau of a moment in time where everything in the universe is stable

Content warnings: Heart: The City Beneath is a horror game and this supplement is written in the same vein. It contains self-injury, disembowelment, body horror, suicide, and ghosts.

CORPUS is an independent production by Sebastian Yūe and is not affiliated with Rowan, Rook and Decard. It is published under the RR&D Community LicenseHeart is copyright Rowan, Rook and Decard. You can find out more and support these games at rowanrookanddecard.com.

Please let me know if you use any of these ideas in your game! I'd love to hear about how it went.


Buy Now$5.95 USD or more

In order to download this game you must purchase it at or above the minimum price of $5.95 USD. You will get access to the following files:

CORPUS_Stylised_1.2.pdf 3 MB
CORPUS_Screen_Reader_Compatible_1.2.pdf 558 kB

Exclusive content

Support this game at or above a special price point to receive something exclusive.

Community Copy

If you’re in need and can’t afford to buy the game, please help yourself to a community copy. 

Every sale contributes one copy to the pool. Anyone who pays over the minimum price of $5.95 adds two more copies.

Please review, rate, leave a comment and share links to the game with others as a cost-free way to support me. Thank you!

Development log


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I love Heart and the landmarks here gave me some fresh inspiration. They're all so varied yet fit the Heart wonderfully!

Wow, thank you so much! I’m really glad you like them! This is the first time I’ve written anything for Heart and I had a lot of fun with it. Thanks again for reading; I hope you enjoy your game!