The today on Steam released Update 1.2.0 for Quern - Undying Thoughts (a spiritual successor to Myst) fixes the problems with controllers on Linux and adds Steam Cloud saves among other things:

An update to the fun Tricky Towers has been released on Steam.

It adds a new endless mode to the game:

The latest update for Tricky Towers adds the new singleplayer endless race game mode, where you have to stack blocks faster than the water rises. How high can you build before the water catches up with you?

Feral has released today a 11 GB huge Update for the Linux-version of XCOM 2 War of the Chosen.

This update contains the huge Fall-Update (released in October on Windows) as well as the minor update from December.

Railway Empire, the new Train-Management-game from Publisher Kalypso, is now avilable for Linux on GOG and Steam!

Already announced in October 2017, now for the forst time a Beta-Version of Battle Chasers Nightwar for Linux is available on Steam.

And this is how you can get it:

Linux test branch is up!
Technical Support - Hooper 2018-01-23 16:37:04 UTC #1

We now have a test branch ready to try for Linux users!

The Red Strings Club, an adventure in a Cyberpunk-setting, is now available for Linux on GOG and Steam!

BTW: the publisher is Devolver Digital, the game has been developed by Deconstructeam.

The Linux-version of the RPG/Strategy-Mix Tower of Time has received a very big (3 GB in size) patch on Steam:

Hotfix 0.6.2.1334 and Linux Patch (big)

Hello All,

We just released a hotfix 0.6.2.1334. The following issues are fixed:

Issues

Achievements will properly unlock

Linux

We also updated Linux build. We have tested it on Ubuntu 17.04. If you have a different distro and run into troubles with cinematics, please let us know. Thanks.