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

baratorch, thank you for the HD mod! But I ask you not to repeat the same mistake that the developers of Windows Media Player, Nero, and a number of other "all-in-one" programs make, by releasing something increasingly bulky and slow with each year, overloaded with a bunch of unnecessary "add-ons," all sorts of "bells and whistles"! Let the HD mod itself have only basic functionality, and everything beyond that can be implemented in the form of plugins that can be downloaded and "attached" separately if needed, similar to extensions in Firefox!
As for WoG, I think that for developments that are fundamentally different in concept from what WoG is aimed at, it is better (more logical, more correct) to start from a clean SoD, rather than adapting WoG to completely different goals.