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

I have a question. Is it possible for the game to compare the host's "rmg" file with its own before generating the map, so that it would be impossible to adjust the desired generation zones in some templates?

I support this suggestion! The same applies to all text files that can change the game.

Also, I have a suggestion: after all the passwords have been entered, they should be saved to a text file so that you can view the saves in a month without having to remember what the passwords were?