I have been following this realistic survival game for about a year now as they stated Linux support on their official website. Some of its main features include an infinite procedurally-generated world, dynamic weather, hunting, crafting and on top of all that it has great graphics.
They will soon be on Steam Early Access, but don't expect Linux support at that time. The good news though, is the developers have verified that they didn't forget penguin lovers, but just won't deliver the game for us at the initial release.
Until it really happens, give them some love on Steam, it might help speed things up. And remember, only buy games when they become officially available on Linux.
About the game
Take the role of a plane crash survivor stranded somewhere in the Pacific Ocean. Experience terrifying encounters both above and below an endless environment. Come face to face with some of the most life threatening scenarios that will result in a different experience each time you play.
Scavenge. Discover. Survive.