I am the owner of GamingOnLinux. After discovering Linux back in the days of Mandrake in 2003, I constantly checked on the progress of Linux until Ubuntu appeared on the scene and it helped me to really love it. You can reach me easily by emailing GamingOnLinux directly. You can follow me personally on Mastodon[External Link].
Rusted Warfare, a 2D RTS from Corroding Games is now on Linux. It reminds me a little of Total Annihilation & Red Alert and it was originally an Android game that's made it to PC.
Shotgun Farmers is a seriously cool game idea and it's just been updated with a bunch of new features and fixes. One feature in particular I requested has made it in!
Ballistic Overkill, one of the best online shooters on Linux has updated again and it now has better matchmaking, if you don't want to manually pick a server.
Following on from the hints about Dark Forces getting the Linux version on Steam, it seems like STAR WARS: Rebel Assault I + II will also see their DOSBox wrapped versions have Linux support on Steam.
Rust is a game I've tried a few times and it never really seemed to click with me, but now after coming back to it after so long I'm finding it to be incredibly fun.
Kindergarten a very highly rated abstract puzzle adventure has made it's way onto Linux. It seems the developer isn't expecting many sales, so perhaps we can change their mind? It does look pretty good!
Pocketwatch Games (Monaco: What's Yours Is Mine) have announced their new strategy game Tooth and Tail. Not only does it look awesome and unique, but I've also got confirmation that it will be on Linux.