Like the previous releases from Egosoft, it started a little rocky but to their credit they're really pushing hard on getting X4: Foundations into a good state.
Paradox Development Studio and Paradox Interactive have today released their latest grand strategy game Imperator: Rome, as expected it's come with same-day Linux support.
Developed by Mi-Clos Studio (Out There) and Goblinz Studio (Robothorium, Dungeon Rushers), Sigma Theory: Global Cold War, a game about using special agents to attempt control of the world has entered Early Access with Linux support recently.
Remember The Ultimate Nerd Game (TUNG)? Well, it's now called Logic World and it's getting a massively expanded release this Summer with full Linux support.
One funding campaign I completely missed was Crossroads Inn, a fantasy tavern simulator that managed to get fully funded. It looks pretty good and it's coming to Linux.
Flippfly (Race The Sun, Evergarden) have announced Cats Fly Helicopters, an amusing sounding game about being a cat flying around a simulated city full of physics and emergent gameplay. On the topic of Linux support, they had some comments for me when asked.