RTF is a global modification that replaces all towns in the game.

Well, if you don't try to be overly ambitious and don't make every map based on the principle of "the bigger, the better," with lots of extra quests and cutscenes like a full-fledged movie, then I wouldn't say it's something extraordinary.

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And on whom are you planning to create liches and vampires?

On liches and vampires, isn't it?