>>72388I wouldn't exactly consider the ever-changing jumble of mechanics and spaghetti code in Paradox titles to be art, but regardless you're confusing a toolset for a piece of art. Anbennar may be built on EU4, but it is not EU4. Even if every person who plays EU4 also plays Anbennar, that does not make them the same thing. They're distributed separately by separate entities who did not collaborate in its creation, one merely uses tools offered by the other, treating mechanics in the same way a fanfic would use characters from another story. Maybe you could argue that non-substantive changes like bug fix mods or UI improvements (which I'm pretty sure make up the majority of those HoI mods) are more like printing a book in a different font or fixing typos, but graphics in a game are generally more fundamental to a visual medium than the presentation of something purely text-based.
You can use ACE to add Tetris to Pokemon Blue, but considering that part of the game's artistic vision would be insane.