X-Plane 12, an advanced flight simulator from Laminar Research that's currently in Early Access and has full Linux support, is set to release in full in December.
Rusted Warfare is a great RTS for people who love the classics. One I discovered years ago on Android and then it later had a PC release. A big new release version 1.15 adds in loads to it.
Entropy : Zero 2 is a very popular and well reviewed Half-Life 2 mod, and the developer has recently announced the public testing of Native Linux support and Steam Input gamepad support.
Looking for your next action RPG with turn-based combat? Inspired by the classic Point & Click Adventure Inherit the Earth, Of Blades & Tails is out in Early Access.
For fans of games like Factorio, the original shapez was a pretty fun take on the automation and factory-building genre and it's getting a bigger follow-up with shapez 2.
Soulstone Survivors is a new Early Access game that arrived with Native Linux support on November 7th, it's also now already one of my favourite games.
Well this was unexpected. Rogue Legacy 2 from Cellar Door Games just had a massive upgrade and they've announced Native Linux and macOS versions are on the way.