Between 2023-12-27 and 2024-01-03 there were 12 New Steam games released with Native Linux clients. For reference, during the same time, there were 157 games released for Windows on Steam, so the Linux versions represent about 7.6 % of total released titles.

As expected there’s very little action between Christmas and New Year in terms of releases, but there were still a few decent titles, and they also happen to be Free games:

COUNTERPACT (Free Game)

Released on 31 Dec, 2023, developed by Little Egg Basket, self-published. [Steam Store Page]

Genre: Action, Indie, Free to Play

About the game: Crush the enemy team with your allies or plunder the Gilded Spire alone in this 2D platform-shooter. Customize and play as one of seven characters with unique mechanics and items.

HYPERSOMNIA (Free Game)

Released on 28 Dec, 2023, developed by Patryk Czachurski and published by TeamHypersomnia. [Steam Store Page]

Genre: Action, Indie, Early Access

About the game: Challenge your friend to an intense duel, or gather two clans to fight a spectacular war. Reawaken your competitive spirit in this relentless top-down shooter. Comes with an in-game map Editor! Forever free and open-source.