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

I came across an interesting picture on VK. Essentially, there is nothing special about it, except for the ability to bind spells to hotkeys. It would be very convenient to use Dimension Door, Town Portal, or oil, resurrection in battle, without spending time looking into and flipping through the book. Is it possible to implement something like this? Currently, numbers 1-9 seem to be free. I think it would be great.