Personally, I don't see it mentioned, but during Next Fest I found and loved both Balatro and "Menace From The Deep". Lovecraftian Cosmic-Horror deckbuilder with some nice twists. The amount of polish is pretty high, the game is quite fun in its current demo, and it seems like it's a passion project from one Ukrainian. I came here to see what other people had found, and just downloaded like 10 demos. Guess I'll be following up here.
I didn’t expect to like Balatro as much as I did. I’m a big fan of deck builders but the poker theme was not super compelling to me. But wow, I’ve had a blast with it. Just boils down to a really good set of mechanics and some ridiculous fun builds. I don’t think it will hold my attention as long as like Slay the Spire or Monster Train but it was well worth the price.
I don’t know, the prices aren’t really a sale on any of the games I see popping up and honestly in terms of mechanics I still don’t think you can beat Slay The Spire and Monster Train.
edit Vault Of The Void and Tainted Grail look good too, Chrono Ark as well.