I made my point in the first post, bud. There's thousands of board games, and then there's chess, which is better and more revered than most of them. Why is that? What sets chess apart? If it's not some artistic spark, why aren't there a hundred chesses? Or a thousands?
What sets Tetris apart? Or Pac Man? Or Mario, or Halo, and so on.
There is hard to define shit going on in game design that makes a few games legendary and most of them terrible, derivative pieces of shit. If it's not art, then what is it?
If you want to get pedantic, there's art, and there's science. The big difference, as far as I'm concerned, is that science is repeatable, while art is not.
As long as the majority of games are garbage and a few shine bright as validations of the hobby, the artistic classifaction of game design is secure.