Unknown Entity - v3.05 (Linux) [.7z] Release Download | 560MB (1.75GB unpacked)
.7z Linux download
Download -> Extract to preferred location -> Run .x86 to open launcher -> Click play to play
If the .x86 doesn't open, you may have to tweak in file properties/permissions or find alternative workarounds
See Trello board for current bugs / what is in the current release