Heroes 3: Third Upgrade mod download

Author: Liso1 September 23, 2026 1 Comment

Platform	ERA Project
File Size	166 MB
Updated	23.09.2026
Version	3.4.2
Authors	VMaiko
Status	active
Install / update this mod via Heroes Launcher
Download (alternative, WoG Folder )
Heroes 3 Complete GOG version (works only with this version)
⚙️WoG Folder is online source of HoMM mods I’ve discovered over the past decade. It’s regularly updated, and all mods are neatly organized. The WoG Folder also contains various goodies like the “Did you know?“ series, artworks, manuals, meme collections, and more.

How to install: Download the archive and unzip it to your PC. Open “[Gameplay] Third Upgrade Mod v3.x.zip” folder and copy “ResOunD” folder to Heroes 3 ERA “\Mods” directory. Activate via Mod Manager or install/update this mod via Heroes Launcher.

What does the Third Upgrade mod contain?

+125 New Creatures.
+90 New Artifacts.
+Various decorative objects that are generated in RMG
+45 new Dwellings.
+35 new Creature Banks.
+New adventure objects.

ATTENTION: Third Upgrades Mod requires “Visual Studio Redistributable” download it in official Microsoft page.

Third Upgrades mod changelog:

Added:

Json translation has been added for the mod.
TUM Dragon Utopias now have 4 sizes.
Rotten Dragons Valley now have 4 variant graphics that distinguish in the sizes from guards and rewards!

Removed:

HotA Objects such as Coliseum of the Magi have been removed because third parties mods fulfill that purpose.
The Dwelling Banks have been removed, as well as their option.
Zaobjcts.txt and objcts.txt have been removed to transfer them to JSON for greater compatibility between WOG and other mods as well as to avoid conflicts.
Removed other unnecessary files from the version prior to 3.0.

Changed:

All Creature Banks have already been transferred to JSON with slight changes and improvements as they were initially.
Rebalanced Tartarus Fiend; Gate Infernals was removed due to a huge imbalance, instead, now they summon Pit Master of fallen units.
Rebalanced Sharpshooter Elves; removed the skills “reduces Defense” and “Shoot Close” by Stack Experience because it produces an enormous advantage over original Sharpshooters.
Blue Tower and Lava Spit graphics were retouched.
Retouched “Ultimate Dragon Utopia” graphic, and now it will be called “Legendary Dragon Utopia”.
The cost of the Third Upgrade Dwellings have been reduced, this in order to help to promote the competitiveness of the AI.

Source: https://github.com/VMaiko1634/Third-Upgrade-Mod-Full