Rogue Legacy was a new style of metroidvania. It reset the castle when your character died, just like Rogue and Nethack, and randomly generated a new castle when you came back to life. Dead Cells has those generated dungeons and also changes out the progression system and combat to be somewhat Souls-like. I love the variety of weapons and effects that speak a little bit more to Symphony of the Night while the art reminds me of the Neo Geo classic, Garou: Mark of the Wolves.
It is in Steam’s Early Access program, but it felt very far along to me, much further than most other Early Access games.
Dead Cells is $17 in Early Access on Steam for Windows.