Quick verdict
Choosing among rpg adventures & campaigns comes down to whether the lower-priced Call of Cthulhu: The Two-Headed Serpent or the higher-priced Pathfinder: Curse of the Crimson Throne better fits your campaign plans. The listed price gap is $101.50. The Two-Headed Serpent is the price-led choice, while Curse of the Crimson Throne makes a more targeted case when its specific format and edition details matter.
At a glance
| Product | Listed price |
|---|---|
| Call of Cthulhu: The Two-Headed Serpent | $28.49 |
| Pathfinder: Curse of the Crimson Throne | $129.99 |
Both copies are listed as used, so the decision is less about choosing between new and used editions and more about matching the campaign title, price, and stated format to your needs.
Where each wins
The Two-Headed Serpent wins for a lower-cost campaign purchase
The Call of Cthulhu title gives this book a clearly defined campaign identity, and its listed price is the lower of the two. It is the simpler pick for a game master who wants a named tabletop RPG campaign book without making the higher-priced Pathfinder purchase.
Curse of the Crimson Throne wins for format specificity
The Pathfinder book has a more explicit physical description: its description identifies a hardcover copy, and the attributes identify it as first edition. Those details give it an advantage for a shopper organizing a collection around a particular binding and edition.
Product notes
Call of Cthulhu: The Two-Headed Serpent

Call of Cthulhu: The Two-Headed Serpent is a sensible choice for a GM who wants the campaign title itself to establish the game line and adventure focus. It is identified as a tabletop RPG campaign book, and its listed year is 2017, which can help place it within a dated RPG collection. Chaosium Inc. is also named in the title and attributes. The clear limitation is the used condition, so it is not the right fit for someone specifically seeking a new copy. Its lower listed price makes the choice easier when the main goal is adding a named Call of Cthulhu campaign while keeping the purchase cost down.
Pathfinder: Curse of the Crimson Throne

Pathfinder Adventure Path Book Curse of the Crimson Throne is the more specifically described choice for a shopper who cares about physical edition details. The description calls it a hardcover copy, while the product information identifies it as first edition. The title also names the Pathfinder Adventure Path and the Pathfinder Roleplaying Game, giving a GM a direct match to that named line. The limitation is the used condition, combined with the much higher listed price than The Two-Headed Serpent. Choose it when the hardcover and first-edition details justify paying more for this particular Pathfinder campaign book.
Final choice by use case
- Choose Call of Cthulhu: The Two-Headed Serpent when the lower listed price and the named Call of Cthulhu campaign are the priorities.
- Choose Pathfinder: Curse of the Crimson Throne when a hardcover, first-edition adventure path is more important than minimizing the purchase price.
- For a price-first RPG collection, The Two-Headed Serpent is the more straightforward decision.
- For an edition-focused Pathfinder collection, Curse of the Crimson Throne is the more targeted match.
The deciding question is therefore simple: do you want the lower-cost campaign title, or are the Pathfinder book's stated hardcover and first-edition details worth the wider price spread?