There was some excitement a while ago about Ashes of the Singularity [Official Site] being ported to Vulkan and eventually Linux. It seems Vulkan is largely complete, but Linux still isn't on their radar.
From the forum post, they say that the Vulkan version should be ready in the Summer, but Linux is still not a priority as they have other things to do. They specifically said:
QuoteThus, in my view, getting the above things done trump getting a Linux version out. That doesn't mean no Linux version, it means it's not yet on the radar.
They've said similar things before, with other things taking a higher priority pushing Linux down. I'm going to be honest here, I really don't think the game will actually come to Linux as it's always being pushed down the list.
A shame, but we have plenty of other games to look forward to.