Honestly, I think there is proper Art in the deep exploration of gameplay mechanics through repetition.

There are so many games that explore this in unique and interesting ways. The exploration of the game mechanic itself is beautiful to me. Examples include Celeste, Braid, Hades, Baba is You, The Witness, Brothers: A Tale of Two Sons, Super Meat Boy, Outer Wilds, Against the Storm... I could go on.