MUTAGENOLOGY UPDATE for 3 4 EE and viking item re balance merge
⚪ Last updated 2014Preview

🔍 Analysis
- 👍 7.0% endorsement rate — high engagement, a strong quality signal
- 🏆 #7 of 15 Alchemy and Crafting mods in this game by downloads
📋 About This Mod
MUTAGENOLOGY UPDATE FOR 3. 4 EE Authors: niktesla, EstevaoCM, Kamilius Version: 3/27/2014
Viking 99 is nice enough to have allowed me to upload a merged file of both our mods in the downloads section. Install instructions are the same.
Hi all. It's my first mod for ANY game. I liked the mutagenology so much I had to get it working. I figured out that the problem was with the en0.w2strings file not allowing shops to receive the new items. I needed to edit this string file with the name of the new schematic and it worked! This mod is also compatible with vikings item rebalance mod, which I highly suggest. It works with mine so it should work with yours. However it is not compatible with any other mod that edits the def_item_schematics.xml, def_item_mutagens.xml or def_shops.xml files or en0.w2strings file. ============================================================================================================ - DESCRIPTION -
Simple mod that allows you to combine lesser mutagens into more powerful ones (e.g. three Minor Mutagens of Power gives one Mutagen of Power). Combining also requires some additional non-mutagen ingredients.
Combining mutagens is possible only by crafting. You need to get a proper schematic first. All schematics were added to Mysterious Merchant Shop and other merchants in-game. Then just ask any craftsman in game to combine mutagens for you.
You CAN'T create Minor Mutagens nor Mutagen of Concentration
- INSTALLING -
Unpack and put "items" folder into your "Witcher 2/CookedPC" directory. Also put en0.w2strings in the main cookedpc folder. Make sure to back up everything first.
- UNINSTALLING -
Simply delete "items" folder or def_item_schematics.xml, def_item_mutagens.xml and def_shops.xml files in it (in case you have other mods that install do this folder).
- Tooltips in schematics descriptions
- Fixing journal entries
- Maybe other languages versions?
- CREDITS -
Originally created by Kamilius, last version v0. 3a BETA.
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- CHANGELOG -
2011/10/01: Applied Kamilius' modifications to the XML files extracted from patch 2. 0 of the game.
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- IMPORTANT NOTES -
This mod will NOT work with other mods that change def_item_schematics.xml, def_item_mutagens.xml or def_shops.xml files.
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This Witcher 3 mod lets you combine three lesser mutagens into a more powerful version, requiring additional non-mutagen ingredients. A simple quality-of-life upgrade for alchemy builds, with 580 endorsements and 8,297 downloads. Last updated in 2014; check compatibility with current game version.
✨ Key Features
📊 Pros & Cons
✅ Pros
- 580 endorsements show the community trusts this mod.
- Over 8,000 downloads means it's been battle-tested by many players.
- Simple, focused mechanic that does exactly what it says.
⚠️ Cons
- Last updated in 2014 — no updates for newer game patches or the Next-Gen version.
- Requires extra non-mutagen ingredients, so you'll need to farm those before combining.
For Witcher 3 players who want to upgrade lesser mutagens into stronger versions without relying on random drops. Perfect for alchemy-focused builds that need specific greater mutagens. Skip if you want a full alchemy overhaul — this is a lightweight QoL mod.
💡 Beginner Tips
- Place the mod folder in your Witcher 3 'mods' directory (create it if missing).
- Use Script Merger if you run other mods that alter alchemy or mutagens.
- Check your alchemy inventory tab after installing to combine mutagens.
📊 Mod Details
- Game
- Witcher2 Mods
- Author
- niktesla EstevaoCM Kamilius
- Version
- 1.0
- Downloads
- 8,297
- Endorsements
- 580
- Category
- Alchemy and Crafting
- Created
- 3/28/2014
- Updated
- 3/28/2014
🔧 How to Install Witcher2 Mods
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