A game is complete when the developer says it is. Period. They are the sole authority on the matter of when the thing they are making is done.

That said, I have been thinking a lot about what games used to offer. When I think of the all-time classics of my youth, I can't help but thinking of the many things modern RPGs have left behind. Level scaling is everywhere now, I never feel like there there's any real sense of progression. Many RPGs offer "race" as a trivial option with very little impact on gameplay. They often only have one or two real abilities with skill trees so shallow you're lucky to see more than 3-4 modifiers. There's no such thing as multiple New Game+ modes. Less character classes than you can count on one hand. Item equipment is so goddamn milktoast, and unimportant, and dumbed-down into a single number like "light" or "power".

They're all just so fucking stupid now. I find myself playing games like Slay the Spire just to get that feeling of building a complex character and it's fucking crazy to me that real RPGs have just disappeared from the landscape.

Yes I'm a grouchy old man, but when thinking about the completeness of a game - I can't help but feel like games like just about every RPG out there is only about half-finished in its character design.