Curse of Strahd as written has a known shape: a strong opening, a strong endgame at Castle Ravenloft, and a middle that asks you to run Barovia as a hexcrawl with little structural support for why factions act between sessions. The supplements below are the community's answers — Reloaded restructures the whole campaign as DM-runnable arcs; the Fleshing Out series fills specific chapter-by-chapter gaps; the rest sit somewhere in between. Pick by what your prep needs, not by what's most-recommended.
⭐ Community Favorite
Free
Curse of Strahd: Reloaded
Full campaign rewrite organizing CoS into DM-friendly narrative arcs. Adds stat blocks, NPC backstories, new plot hooks, and encounter guidance for every major area. If you've decided to treat the module as raw material rather than a finished adventure, this is the rewrite most CoS DMs end up reading first. 158★ on GitHub, 905 Reddit upvotes.
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⭐ Community Favorite
Free
Raising the Stakes: The Essential CoS Companion
105-page DM companion filling CoS's biggest narrative gaps — ties disjointed threads, adds the Binding of Vampyr mechanic, and restructures key encounters across 18 chapters. 4.96/5 across 28 reviews; the most-recommended free standalone CoS guide.
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Prep Guide
PWYW
Fleshing Out CoS: Prepping the Adventure
MandyMod's campaign entry point — Barovia cosmology, adventure flowchart, leveling guide, and a breakdown of the module's most common DM pitfalls. The recommended first read before any other FOCOS volume. 59+ DMsGuild ratings.
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⭐ Mithral Bestseller
Paid
Curse of Strahd Companion: The Complete Edition
440 pages, location-by-location prep notes, expanded NPC backstories, and the Wedding at Ravenloft finale included in one volume. Mithral bestseller (DMsGuild's top sales tier). Worth it if you want one DM-side companion instead of stitching together MandyMod, Reloaded, and a Wedding download.
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Location Guide
Paid
Fleshing Out CoS: Vallaki
Deep-dive on Vallaki's politics, NPCs, and event flowchart — the most complex town in the campaign. Gold bestseller (2025); most-cited FOCOS volume after Prepping for new CoS DMs.
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Campaign Finale
Paid
The Wedding at Ravenloft
A scripted Castle Ravenloft finale — Strahd has captured Ireena and the party must stop the wedding. Designed for level 9 characters; 5–7 hours with scripted toasts, trial by combat, and full castle choreography. Mithral bestseller; 4,700+ copies sold.
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Guide Series
Free + Paid
Fleshing Out CoS — Master Table of Contents
MandyMod's landmark post indexing her entire Fleshing Out series — the most upvoted CoS resource series on r/CurseofStrahd. 1,822 upvotes. Adds NPC depth, fixes plot holes, rewrites Death House.
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Prep Guide
Free
So You Want to Run CoS: A Primer
Comprehensive first-read guide covering what CoS is, how to prep it, the basic story arc, common pitfalls, and content warning checklist. 1,628 Reddit upvotes.
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