Ruffy and the Riverside could be one of the best platformers of 2025, and it's going to release with Native Linux support on June 26th.
https://www.gamingonlinux.com/2025/03/unique-platformer-ruffy-and-the-riverside-with-a-copy-and-paste-mechanic-releases-june-26/

I've already covered what I think are the must-have Steam Deck deals in the Steam Spring Sale 2025, but what if you're someone who specifically shops for games that have a Native Linux version available? Here's some recommendations for you.
https://www.gamingonlinux.com/2025/03/must-have-native-linux-games-under-10-in-the-steam-spring-sale-2025/

2D BOY / Tomorrow Corporation have announced that following it being an exclusive to the Epic Games Store and their own store on PC, that World of Goo 2 is coming to Steam.
https://www.gamingonlinux.com/2025/03/world-of-goo-2-is-coming-to-steam-very-soon-with-the-store-page-now-up/

The team at Nexus Mods have released a new version of their open source and cross-platform Nexus Mods app, with Stardew Valley modding now considered close to being ready for everyone.
https://www.gamingonlinux.com/2025/03/stardew-valley-modding-on-linux-steam-deck-takes-a-step-with-the-nexus-mods-app/

So far the oldest game binary I have launched has been the original Linux port of Doom. This brought me back to 1994, both the year I was born and the year that the Linux kernel reached its milestone 1.0 release. Browsing an old SunSITE archive I came across the jetpack-linux.tar.z tarball, which contained an unusual X11 game built and packaged in June 1993.
https://www.gamingonlinux.com/2025/03/building-a-retro-linux-gaming-computer-part-47-before-i-was-born/

Paradox have announced Crusader Kings III: Chapter IV, the next expansion pass for their popular strategy game. One DLC is already available, with the next major expansion due out April 28th.
https://www.gamingonlinux.com/2025/03/crusader-kings-iii-chapter-iv-announced-with-next-major-expansion-in-april/

12 years after the successful Kickstarter, the supernatural horror adventure ASYLUM from Senscape has finally seen a release. Although the Native Linux version has unfortunately been delayed.
https://www.gamingonlinux.com/2025/03/supernatural-horror-adventure-asylum-from-senscape-is-finally-out-linux-version-delayed/

Back in 2014 the mech combat game Dark Horizons: Mechanized Corps arrived on Steam in Early Access but it was eventually abandoned. Now, a few of the original team got back together to bring it back as Mechanized Corps: Rebirth.
https://www.gamingonlinux.com/2025/03/mech-combat-game-mechanized-corps-rebirth-arrives-in-early-access/

It looks very much like Advance Wars. LAVABIRD and First Break Labs have announced that Warside is set for launch now on April 14th.
https://www.gamingonlinux.com/2025/03/fast-paced-turn-based-tactics-game-warside-for-fans-of-advance-wars-launches-april-14/

A game that continues to review well by players, with it hitting a good sales milestone not long after launch, The Spell Brigade from Bolt Blaster Games has a big update out now with a brand new character.
https://www.gamingonlinux.com/2025/03/spell-combining-co-op-survivor-like-the-spell-brigade-adds-a-new-character-and-a-new-game-mode/

When you make your way out of the cabin in the woods at the end of a production cycle, what happens next? With the release of Slay The Princess: The Pristine Cut DLC, I asked Black Tabby Games developers Tony Howard-Aris and Abby Howard about the game's past and present, as well as the future of Black Tabby Games, and even some very important lore about the Voices.
https://www.gamingonlinux.com/2025/03/a-sweeping-journey-down-the-path-in-the-woods-slay-the-princess-pristine-cut-interview/

Chudo-Yudo Games are working on Machine Mind, an interesting mixture of strategy and action genres blended together. There's a demo available to try with Linux support, along with an expanded playtest.
https://www.gamingonlinux.com/2025/03/machine-mind-blends-real-time-action-with-survival-and-rts-elements-to-make-a-fun-mix/

Inspired by games like XCOM 2, Shadowrun and Invisible Inc the latest from Trese Brothers with Cyber Knights: Flashpoint is set to leave Early Access on May 15th with a new update out now.
https://www.gamingonlinux.com/2025/03/cyber-knights-flashpoint-the-cyberpunk-xcom-like-hits-full-launch-on-may-15/

Wadjet Eye Games have announced their next game, the time-travelling adventure Old Skies, is now set for launch on April 23rd.
https://www.gamingonlinux.com/2025/03/time-travelling-adventure-old-skies-from-wadjet-eye-games-arrives-april-23/

From developer 8BitSkull (BORE BLASTERS, Void Scrappers) their next game is Skull Horde, an auto-battling dungeon crawler where you raise up an undead army while floating around.
https://www.gamingonlinux.com/2025/03/first-trailer-live-for-skull-horde-where-you-command-an-army-of-dead-soldiers-as-a-floating-skull/

Tellus Games have released Oblin Party, a physics-based 2D party party brawler where you have direct control over your two hands made with Godot. It has Native Linux support and should work great on Steam Deck too.
https://www.gamingonlinux.com/2025/03/hilarious-physics-based-2d-multiplayer-brawler-oblin-party-is-out-now/

STRAFTAT originally launched in October 2024, and just recently the developer added a Linux version. It's a completely ridiculous competitive 1v1 online shooter with quick rounds and lots of weapons.
https://www.gamingonlinux.com/2025/03/completely-ridiculous-online-1v1-shooter-straftat-added-a-linux-version/

Inspired clearly by the likes of classic Zelda and the Game Boy Color, Isle of Reveries is one for fans of retro games that want something new and fresh.
https://www.gamingonlinux.com/2025/03/isle-of-reveries-looks-like-a-fun-classic-zelda-like-with-some-interesting-game-mechanics/

Here's a fun one to start your week off right. Modder Carl Asami has combined the worlds of Fallout with DOOM for you to blast through.
https://www.gamingonlinux.com/2025/03/fallout-and-doom-get-combined-in-the-fallout-vault-666-mod/

VoxeLibre the free and open source Minecraft-like game available via Luanti (formerly Minetest), just had another big release made available. The new v0.89 brings lots of improvements to gameplay and performance.
https://www.gamingonlinux.com/2025/03/open-source-minecraft-like-game-voxelibre-0-89-brings-another-big-load-of-improvements/