Gamescope from Valve developer Pierre-Loup A. Griffais is described as a micro-compositor that can spoof a virtual screen with a desired resolution and refresh rate and control/resize the output as needed. Here's a few early scaling tests taken.
Want to see the dirty innards of more Valve code? Well you're in luck as they now have a lot of work involved in the Steam Runtime on GitLab including the Pressure Vessel container.
Caesar III continues to live on and get improvements on modern systems thanks to open source, with the Julius game engine continuing to mature.
Announced and highlighted back here in September, LEd is a modern open source level editor from the previous development lead on Dead Cells.
Breaking down barriers towards closer Windows compatibility, the Wine compatibility layer team have released the Wine 5.20 development release along with new features and fixes.
The weekend is just about here and if you're stuck for something to do, why not try out the cyberpunk adventure Quadrilateral Cowboy with the latest update.
Despite the small version bump, Godot 3.2.4 will be quite big release for game developers wanting to squeeze out some more performance.
Machines: Wired for War is a true classic 3D RTS from the late 90s, and it appears to now be open source under the GPL and up on GitHub.
In case you've missed what's been going on, the progress on proper Vulkan support for the Raspberry Pi 4 has been going really well.
While the free and open source game engine Godot Engine already has Linux support, for both exported games and the full editor, it's set to get even better in Godot 4.0.
Fancy becoming a dungeon master? Well, if you're watching the pennies you might want to go and pick up KeeperRL before they price gets bumped up.
Lutris is the impressive all-in-one solution for managing games on Linux, bundling tons of sources of Linux releases from different stores under one roof as well as emulators, compatibility layers and more.
Own a PlayStation 4 and want to stream games from it to your Linux desktop? Chiaki is great for that and a fresh upgrade is out to keep it working.
Okay, hear me out. You want to keep an eye on your system for things like RAM use, disk space, processor load and more…but you want something a tiny bit flashy that's still simple enough to run in a terminal window? You need to try out bpytop.
Another fine example of open source in action with a commercial indie game here, as the dungeon building sim KeeperRL continues being upgraded.
Plasma is arguably one of the prettiest Linux desktop environments around, and it's highly configurable too. The KDE team just released a huge upgrade with Plasma 5.20.
Do you have a Guitar Hero Live (PS3) 6-fret guitar or perhaps one from the Wii U that you want to use on Linux? Prepare to dust them off.
More classics continuing to live on?! Yes please, thanks to the power of open source and dedicated fans The Elder Scrolls: Arena has a modern game engine that continues maturing.
Just released today is Epicinium, a competitive strategy game that tries to get you to think a little differently as you fight while trying not to destroy the environment.
Remember social games like Second Life? Vircadia, was created from a failed spiritual successor to it and it's free and open source too.