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

We were playing with a 3.43 version and a chess timer, saved the game, and when we continued, the timer reset and is now set to unlimited. During the save, I updated the mod to 3.45, and I moved the game files and password to a separate folder. The "more options" menu is accessible, but it doesn't allow me to enable the chess timer.