HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

As I understand it, the concept of a "feature" is a traditional and widespread use of bugs and flaws in the game, and if there's a possibility to fix a flaw or bug, people tend to strongly oppose it. These "features" also included viewing the opponent's towns, resources, and essentially cloning heroes. I think that if errors are to be fixed, they should be fixed completely. Thanks to Baratorch for the mod and for the detailed investigation of the hydra phenomenon in the clues!