I think it will be more useful for you to just google a top 10 crypto games

I also tried to find good games there.
They are not, they are old and not interesting

The coolest projects have always been and will be anonymous and not known

are cryptokitties an exception?

well cryptokitties was well known game. Everybody knew about it

That might be the main issue with kitties.

What concrete? The popularity? I don't think it could harm any game ever.

Especially if it is a crypto game with no ads in it.