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

2.63u (11/16/2010)

[+] When the option to fix in-game bugs is enabled, you can no longer switch the positions of your hero and an allied hero in a town using the spacebar.
[+] Added the ability to fix the consequences of certain bugs, such as hero duplication, a castle turning gray, or a hero's "shadow" appearing after the hero is killed/dismissed. The fix is currently selective: hover the mouse over the shadow/clone/town entrance on the map and press the left [Shift] + [F2]. Fixing these bugs only works if the option to fix in-game bugs is enabled.