There's no formal announcement yet on the Steam store page, but the developer posted this on the Steam forum:
Good news for all Linux users - the Linux version is as of now unofficially available. Because AMD is not supported in this version (you can try, but it's likely that the game will crash or there will at least be a lot of graphical issues) and we'd like to collect user feedback first, we've decided to not feature the Linux version on the steam page, yet.
All backers and everyone else who already bought the game will be able to install it using the steam client on Linux, though.
Have fun and please let us know if there are any problems.
The developers also tweeted to us on the gamingonlinux account this video of them running it on Linux. Seems like they're quite excited to see their work finally start paying off. I'm really happy for them, it's been a long bumpy road but it's finally coming to an end.
I personally purchased the game, since I've been extremely excited to give it a go. I'm happy to report that it does work just fine, for me. I am on NVIDIA though, so I'm at least supported in the unofficial release.
Note: If it doesn't run for you, then you may need to remove the "LD_LIBRARY_PATH" from the launch script, to make it look something like this (Arch users and maybe more):
UE4_TRUE_SCRIPT_NAME="$(echo "$0" | xargs readlink -f)"
chmod +x "$UE4_PROJECT_ROOT/RSG/Binaries/Linux/RSG-Linux-Shipping"
This can be found in the "Everspace.sh" file in the games installation folder. I've tested this and while the original launch script works for me, the above also works.
I have the game set to the "Epic" preset, with Motion Blur (eww!) turned off and it's been a dream so far. There was a minor blip when I first fired some weapons, but after that it didn't happen again. Super smooth display, extremely responsive controls and boy does it look incredible.
Here's some shots I took, isn't it a beauty?
About the game:
EVERSPACE™ is an action-focused single-player space shooter, combining roguelike elements with top-notch visuals and a captivating story. It takes you on a challenging journey through an ever-changing, beautifully crafted universe full of surprises. Your skills, experience, and talent for improvisation will be tested continuously as you piece together the puzzle of your existence through encounters with interesting characters, each having their own unique part of the story to tell. In each exciting run, you will face entirely new situations, ensuring countless hours of thrilling gameplay and generating myriad opportunities for individual, meaningful moments to experience. No matter how skilled you are, death is inevitable but is also only the beginning of a much larger journey.
I will have a more thorough review up once I've had more time to play it!
Appreciate the tip, @eld_dop!