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

Regarding the sounds, the best solution would be to "parallelize" them. That is, to ensure that everything plays and sounds correctly, but without slowing down the game. Let's discuss the hotkeys in the exchange window. I have two similar ideas: 1. Right Shift + left arrow - transfer the army to the left. Right Shift + right arrow - transfer the army to the right. Right Shift + up/down arrow - exchange armies. Right Ctrl + left arrow - transfer artifacts to the left. Right Ctrl + right arrow - transfer artifacts to the right. Right Ctrl + up/down arrow - exchange artifacts. Left arrow - transfer the army and artifacts to the left. Right arrow - transfer the army and artifacts to the right. Up/down arrow - exchange armies and artifacts. ...it seems like you can press all of these with one left hand. 2. Left arrow - transfer the army to the left. Right arrow - transfer the army to the right. Left arrow + right arrow - exchange armies. Up arrow - transfer artifacts to the left. Down arrow - transfer artifacts to the right. Up + down - exchange. But maybe most people would find some less obvious keys like F10, F11, etc. more convenient. In general, are one-way transfer buttons useful, or should hotkeys only be made for exchanging? I'm too lazy to make the hotkeys customizable