Currently crowdfunding on Kickstarter, the promising looking top-down WW1 survival horror CONSCRIPT has been granted an extension to their campaign. Originally due to finish on July 16, they've now got until July 23 to hit the $30,000 Australian dollars (about £16,559) goal.
"During the First World War, a lone French soldier must navigate twisted trenches, scavenge for limited supplies and solve complex puzzles - all whilst fighting for survival in the midst of mankind’s most brutal and horrifying conflict."
The developer has confirmed to GOL that while the demo doesn't support Linux, they fully plan to support it with the proper full game. Their Kickstarter FAQ is very clearly on the platform support too:
Until release, I am focusing primarily on bringing the game to PC (Windows, Mac, Linux).
Given the setting and one that's not usually explored in this way, I'm personally hoping it succeeds. Looks like it could be thoroughly interesting and a little scary to play through.