Knights and Merchants was originally a LinuxGamePublishing (RIP) title, and sadly the port source code must have gone with it. Topware Interactive now have a Linux beta available on Steam that uses Wine.
There's a pretty big patch out for Divinity: Original Sin - Enhanced Edition that fixes a number of issues, and shows Larian is supporting their game well.
Could be sad news ahead for strategy fans, as the original Total War: WARHAMMER announcement listed SteamOS in the platform list, but their latest messages don't seem too confident.
The time of waiting is nearly over, or so they say. A member of the Rocket League team mentioned on the Steam forum it will be due very soon at the end of Q1 2016.
Interstellar Marines was a seriously promising FPS game that would have single player, co-op play and online versus multiplayer. Sadly, they have had to let staff go and rely on interns right now as they seek more funding.
The game is available DRM free via Humble Bundle and on Steam, and is already playable from start to finish, but is being kept in Early Access while full English voiceovers and text translations are being added.
Great news FPS fans! Arma 3 will see an update on the Linux port to version 1.54 tomorrow! Not quite the current version, but it's a step closer and there's more good news.
For those not keeping track: SteamOS was recently updated to include the changes from the recent 2.64 beta and it brings Vulkan for Nvidia amongst other changes.
I've somewhat followed the RPG Maker program over the years to see it evolve into a tool some decent games have been made from, and now it looks like RPG Maker MV will come to Linux.
What a day to be a Linux gamers! DiRT Rally is also now showing signs that it will be ported to Linux. Another great racing game I have wanted to play, and our first proper Rally game.
Another game I have really wanted to play, but didn't think it would come to Linux. Life Is Strange is a well reviewed story game based on based choice and consequence.
I've been looking forward to trying out Balrum since seeing it on a crowdfunding site some time ago, and now it has had a day-1 release on Linux I got a chance to play with it.
Police Infinity claims it isn't "yet another Unity FPS" and it has my hopes up a little bit. It doesn't look too bad, and the animations in first person look quite nice too. It's due to enter Early Access soon.