Humble Bundle currently has an offer for some Metroidvania games. I picked it up but already had a couple of them, so I'm giving those Steam keys away. If you redeem it, please comment so I don't try to give it away again.
~~Hollow Knight: H85HA-6I3FL-NZRAW~~ (claimed)
~~Bloodstained: Ritual of the Night: RHK6K-KWLAX-W2P7C~~ (claimed)
That's been my impression of it as well. I'm also playing Haiku and Blasphemous from the same bundle