One of my current favourite indie games (and the only Rogue-like I actually like!), Dungeons of Dredmor is still officially coming to Linux!
To quote:
Buying Dungeons of Dredmor via non-Steam distribution channels
Is a real thing that really exists and it’s up next on the to-do after patch 104 ships. Deals have been made and will be announced when the time is right.
Dungeons of Dredmor on Linux
Is also a thing that will happen after patch 104 (and of course requires the above non-Steam distribution channels because there’s no Linux Steam … yet?
[youtube https://www.youtube.com/watch?v=Nh2SywpXrYg&w=420&h=345]
Official site:
https://www.gaslampgames.com