Official announcement:

Pre-Alpha Public Release
We have now moved from a closed pre-alpha to a public one. The build is now available for download from https://ksa.ahwoo.com/. It is important to manage expectations, with the current build being certainly much more than a tech demo, but less than a game. This is expected as we have focused on establishing solid core fundamentals that will provide a safe scaffold to build all that we want to on top of this. It is this that you should see in the build.

https://ahwoo.com/posts/019a8091-b519-7fd6-b0e8-cda461864d8b

Official download link: https://ksa.ahwoo.com/ (This is also where contributions can be made for those who wish to do so)

Mirror (HTTP)
Mirror (Torrent)

I won't have time to test it myself for a while, so I'm happy to hear what you think and whether you manage to make it run on linux.