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

I'll say it again.

If we set the rules for a season to only allow playing with HD, I'm all for it!

But another interesting point is, for example, the bug with selling artifacts at inflated prices. I have HD on my opponent's Sod, can he use it? Or is it just me who can't? Or maybe only when HE creates it? Or can't he use it at all?

This is a very important point for me... :-)