Could be a fun twist for the genre. Steel Knight's ARMIS takes the ideas of Vampire Survivors with the upgrade system and tweaks it to be like a mecha anime.
Inspired by the style of 90s animation, Nanuka: Secret of the Shattering Moon really does look great with the blend of action-platforming and some huge enemies.
Arena Breakout: Infinite releases soon from Morefun Studios and sadly, this is yet another online multiplayer title that will not work on Linux / SteamOS.
Digimon Story Time Stranger is coming soon from Media.Vision Inc. and Bandai Namco Entertainment Inc. and it's now it has a Steam Deck and SteamOS rating.
Airborne Empire is an interesting hybrid that mixes city-building, with open-world exploration and the latest update should fix it up on Linux / Steam Deck.
Here's a free game that you should try out. It's called Psycutlery, an action-platformer where you bring down an abomination of evil with a piece of silverware.
With the ongoing Nintendo and Pokemon versus Palworld lawsuit, another patent has been found recently that's rather problematic for the whole gaming industry.