The Adventures of Panzer: Legacy Collection is a little scrappy on the gameplay front, which isn’t too dissimilar to the NES games that it’s emulating. But it’s also a hoot.
I like the story and strange dream world of Withering Rooms, as well as the Souls-like RPG elements and location. It's a bold move, but it works, pulled off well.
Froggie - A Retro Platformer is certainly worth consideration. Go in with expectations low, and you should be pleasantly surprised by how well this retro platformer holds up.
Tonguç Bodur is capable of creating some brilliantly relaxing walking sims, mixing in strange fairy tales and calming visuals. GENIE Reprise is one of those better games