The current Update for Dying Light adds a Deathmatch-Mode to the game.
A first PVP-enabled map has also been released.

A patch for Wasteland 2: Director's Cut has been released today which adds the long-awaited modding support.
Detailed information can be found in the official mod support guide.

Punch Club, a mix between Fighter management sim with RPG and tycoon elements and interesting Story, is now available for Linux on Steam.

Description:

Train hard, fight crocodiles and find love. Earn your place in the Punch Club ranks, and discover who brutally murdered your father, in this choose your own adventure boxing management tycoon.

Playonlinux, the Software, which makes it easy to use Windows-Titles on Linux (using WINE), has released the Version 4.2.10.

Changelog:

PlayOnLinux and PlayOnMac 4.2.10 are now released. Here is the changelog:

Wine 1.8 staging is now the default wine version on OSX. The build process has been improved thanks to wine-staging team so that the compiler supports ms_hook_prologue, allowing function hotpatching. This should improve the compatibility of some applications like Steam.

OpenRA, the free implementation of old RTS-classics like C&C (Tiberian Dawn), C&C: Red Alert, and Dune 2000 has released a new version just in time for Christmas.

It contains a lot of improvements like a global chat and a redesign of the server-browser.

Source: OpenRA Website

Description:

SteamDB currently reports heavy caching-Problems at Steam.
This leads to some information disclosure, like users seeing profiles of other users (incl. all games and personal data).

There is currently only one solution: DO NOT USE STEAM, and don't try to change personal data (adress, paying informations aso)!

Blues and Bullets: Episode 1 is now available for Linux on Steam!

At the same time, the developer announced the upcoming release for the second episode for Linux at the same time (or extremely close) to the release for all other platforms.

Here is the official announcement on Steam: