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

Hmm, the game keeps crashing during hotseat mode, three times in the last, relatively short, game... It seems to happen during the autosave, which occurs at the end of the turn. Because of this, I had to repeat the turn. I haven't observed this in single-player yet.
PS: The mod version is 2.98. The other system specs are listed above.