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

To put it bluntly: one player can afford to take an hour break for a beer without any in-game consequences, while the other can't. This is very unfair.

But this doesn't really relate to in-game fairness, and fighting for world justice isn't really part of the mod's goals.

If there's a tendency to go for a beer without warning the opponent, you can do it by starting a battle on the Sod's timer. And that would be even worse, because it doesn't use the opponent's turn time.

And, in reality, there isn't really such a problem in actual gameplay. There is another problem: sometimes it's really impossible to step away for 3 minutes without the risk that the opponent's turn will be short.