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

Message from R55Max
in the Heroes community, most players use the SOD version.

This is an argument in favor of SOD. The WCL rules, as well as their level of play, are simply not worth discussing. By the way, the best European players occasionally use this version. It would also be good to have the rules in English.