A sanity-as-a-resource metroidvania they're calling a horrorvania, Yesterdreamt seems interesting and now it has a Native Linux demo with Steam Deck support.
Monsters are Coming! Rock & Road has just planted itself right at the top of my wishlist for the excellent combination of survivor-likes with tower defense.
Developer starlit studio recently put up a Linux demo for Solace Creek, a retro-styled horror game that has a focus on suspense, exploration, stealth & puzzles.
Frogspin is an upcoming roguelike platformer where you spin to win, which results in some absolute mayhem as every level begins with the pull of a lever.
Truckful is a very colourful looking delivery mystery adventure from MythicOwl and Palworld publisher Pocketpair Publishing. A demo is coming next month!
AUTARKIS is an upcoming puzzle colony builder from developer rockingprojects. It's all about building mini colonies, and protecting them from catastrophes.
Repterra is a promising upcoming real-time strategy game that has a demo available, and if you love the idea of facing hordes of dinosaurs it's one for you.