It's not often a trailer leaves me begging for more, but 'Tether' [Steam Greenlight, Official Site] ticked all my boxes. The developer is using UE4 and claims the Linux builds are working as expected.
I asked the developer about the status of Linux, and they replied with:
QuotePorting with UE4 is a very simple process provided you have the correct operating system. We have the equipment in place and have been testing various bakes across the different Linux flavors. Results have been as expected.
About the game
Tether is a first-person adventure game based in a dilapidated science fiction world. Earth is dying after the collapse of several continents throughout the world following the destruction of the Moon - as natural disasters sweep the planet, the newly formed United Environmental Federation (UEF) accelerate plans to terraform the nearest possible habitable planet, Mars.
You play as Lesleigh Hayes - a Biological Research Assistant for the UEF - on her first deep space voyage to Mars. Once aboard the Sonne, Lesleigh's thoughts turn to her children as she re-lives some of their final conversations before leaving. As catastrophic events unfold on the UEF Sonne, Lesleigh is forced to survive the psychological horrors of isolation in deep space.
Can she live with the consequences of her choices? How will these affect her children? Is this how motherhood should be?
What do you think? Sounds good to me!