@uoou yeah its a winner, I actually bought the original version from the said publishers for $40, had time limited download and phone home DRM code unlock. Would run on Wine, not so much the code unlock.
The developer was stuck in contract for 5 years with no way out. (The dev also made the game The Curse of Yendor - which made it to Steam.)
This year, during the pandemic, publisher offered a way to release the game from the suffocating contract. So it's been a bit of a wait but it's out!
Linux Geeks doing what Linux Geeks do..