Call of Cthulhu Campaigns: Time to Harvest vs Cults of Cthulhu
By The Game Steward | Published: 2026-10-18
Category: Comparisons
Compare the Call of Cthulhu: A Time to Harvest campaign and the Cults of Cthulhu supplement. Learn which book fits your game style and budget.
Quick answer
If you want a ready-to-run campaign, get A Time to Harvest. If you prefer a toolbox of new cults and lore to weave into your own stories, choose Cults of Cthulhu.
Campaign vs supplement: different jobs
A Time to Harvest is a complete campaign with a connected story arc. Cults of Cthulhu is a supplement that adds a dozen new cults, each with its own goals, rituals, and plot hooks. The choice depends on whether you want a guided adventure path or modular material to customize.
Both books use the Call of Cthulhu 7th Edition rules and are published by Chaosium. The page counts are similar—336 for the campaign and 366 for the supplement—but their contents serve different play styles.
Trade-offs at a glance
- Story structure: A Time to Harvest is a linear campaign with a defined beginning, middle, and end. Cults of Cthulhu is a collection of independent cult profiles you can drop into any existing game. Choose Harvest if you want a self-contained story; choose Cults if you want flexible building blocks.
- Replay value: Once you finish A Time to Harvest, the campaign is done. Cults of Cthulhu can be used repeatedly across different campaigns because each cult entry works as a standalone scenario seed. Cults offers more long-term value for ongoing groups.
- Price difference: A Time to Harvest costs USD 30.49 (down from USD 49.99). Cults of Cthulhu costs USD 69.99 (down from USD 99.99). The supplement is more expensive upfront but provides more reusable material. Harvest is the budget-friendly pick for a single campaign; Cults is a larger investment for a versatile reference.
Product facts
- Call of Cthulhu: A Time to Harvest Hardback (Retail Edition): Full-color leatherette hardback with 336 pages, published 2021. The leatherette binding is durable for table use, and the page count supports a multi-session campaign without feeling thin.
Call of Cthulhu: A Time to Harvest Hardback (Retail Edition) - Call of Cthulhu: Cults of Cthulhu Deluxe Leatherette (Retail Edition): Deluxe leatherette hardback with 366 pages, published 2021. The extra 30 pages hold detailed write-ups for multiple cults, giving you more reusable content than a single campaign path.
Call of Cthulhu: Cults of Cthulhu Deluxe Leatherette (Retail Edition)
Which one fits your game?
Best for
- New Keepers who want a complete campaign with minimal prep
- Players who enjoy a single narrative arc over multiple sessions
Not for
- Keepers who prefer to build custom scenarios from modular parts
- Groups that already own a full campaign and need fresh cult material
