Over the years some linux versions found their way into my collection (as I was still collecting physical media, nowadays I'm happily collecting / renting games digitally).

Here are both my original Loki boxes, which are complete
!link

and one unfortunately missing the CD (I don't really remember where I got this, maybe ebay)
!link

and also some games that were only sold as case (after the era of game boxes)
!link

Other than that I still have some boxes and cases of games that got downloadable installers or point releases (e.g. Doom, Quake, NWN).

Here's my only game from Loki. In Germany, some (or maybe all) of those were published by S.u.S.E.. Wonder if they'd still offer those 30 days of installation support if I'd send the registration card now ...
!Civilization Call to Power box and content
Then, here's two more in DVD-sized cases from around 2015 that prominently feature Linux support on the box. I also like the DRM-free logo. Power to the customer, I guess!
!Broken Age and Book of Unwritten Tales 2 boxes front and back
And for good measure, a rather recent collector's big box. Like how the sticker mimicks that of game boxes of the '80s and '90s, when you had the same boxes for so many competing computer architectures.
!Thimbleweed Park collector's box
I've got some more boxed games for Linux (the most recent being Victoria 3), but a lot of them fail to mention Linux support on the box, or it's buried somewhere in the fine print, so I'll leave it at those four.

and one unfortunately missing the CD (I don't really remember where I got this, maybe ebay

Strangely enough I have the jewel case for HoMM3 but not the box. Not the original inhabitant by any chance?

All of my pictures of course are saved for either past or future articles:
https://icculus.org/~hamish/retro/index.html

wow cool stuff posted so far. What ever happened with loki?

They went bust.

As a fan, that Heroes III box is gorgeous!