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

We take the save from the attachment. It loads, and we see 5 heroes. We click on "view opponent's turn" (I did this both with the A+R buttons and with the corresponding mouse button). After that, 3 of our former heroes appear (some of whom the opponent killed during their turn) with full turns in the 3 bottom slots for heroes. If you click on them with the left mouse button, the game crashes (they don't belong to the player, or rather, they are not on the map), but you can click on them with the right mouse button and even open the hero view window by switching to these heroes from the window showing our hero.