Heroes 3, probably still most successful game in the series, spiritual successor of Heroes 2, after all - it's based on the same engine. There also exists Heroes 3 HD by Ubisoft but it's missing both Add-Ons, Armagedon Blade and Shadow of Death - on the other hand, Ubisoft released it also as an Android game. Developed by 3DO and published by NWC. Among with Heroes 4, it have the best map editors which warranted thousands of maps and campaigns created. Recommended mod here is ERA2, which is "WoGified", meaning that it contains WoG, in a way. WoG 3.59 is still along the way but there is plenty of other fan mods, like Horn of Abyss. If you would like just the vanilla game, certainly install HD mod by baratorch. This one is already included in ERA2. Should mention also VCMI, which is not a mod but a new engine, with everything written a new, reusing game assets, adding new ones and having version for Android too.

Title Published Date
In The Wake of Gods → The Begininng 11 January 2005
In The Wake of Gods → Gorynich 11 January 2005
HotA 1.6.0 released 09 January 2020
HotA 1.5.4 - Bug fix release 29 December 2018
Heroes3WoG.net - Map Contest 04 May 2018
Heroes of Might and Magic III: The Succession Wars v0.8 Official Trailer 15 May 2018
Heroes of Might and Magic III HD+ Mod receives epic update 20 November 2019
Heroes III: Masters of Sighisoara 13 December 2018
Hack and Slash → Bashing Skulls 02 January 2005
Hack & Slash → Black Sheep 02 January 2005
Hack & Slash → A Cage in the Hand 02 January 2005
Hack & Slash → Grave Robber 02 January 2005
H3: WoG 3.59 International 28 February 2018
H3: VCMI: Mod Design Team 11 October 2017
H3: VCMI 17 October 2016
H3: The Succession Wars 30 May 2018
H3: SP Plugin by RoseKavalier 28 February 2018
H3: Masters of Sighisoara 25 July 2018
H3: HD Mod by baratorch 12 January 2017
H3: ERA II. 28 February 2018