Brennan
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Heroekopalka doesn't delve into the save file structure at all; it merely emulates keyboard and mouse key presses on behalf of the user.
Moreover, it operates based on a principle that prevents it from influencing the save file structure in any way. It works not with the game's program code but with the window, emulating cursor movement and key presses. The tool identifies heroes by their appearance in the tavern (meaning if there are heroes with non-standard appearances on the map, it won't be able to find them). This is why it can only work with specific resolutions and color depths.
So, there's no reason to ban it ;)