I'm a huge fan of drag and drop creation tools like Construct 3, that allow you to create games by building simple events sheets and it seems they've continued making Construct 3 more awesome to use.
Speaking on their official blog, Godot Engine developer Juan Linietsky writes about how the open source game engine will be getting Vulkan API support.
In a recent 'meet the team' blog post interview, David Kaye the Lead System Engineer at Crytek talked a little about his role and how improved Linux support is coming.
OpenRA is a fantastic game engine, which enables you to play Command & Conquer, Command & Conquer: Red Alert and Dune 2000 on Linux. The latest test release is rather nice too.
GZDoom, the open source id Tech 1 engine that powers mods such as Project Brutality and standalone TCs like WolfenDoom: Blade of Agony or Castlevania: Simon's Destiny, has a new version out with improved support for Mesa drivers on Linux.
While a lot of people have likely moved onto the newer editions of games like Baldur's Gate and Icewind Dale, GemRB is still being updated if you wish to play the originals on Linux.
The advanced open source game engine Godot has managed to secure funding from Enjin Coin, which should go a long way to wards hiring a second developer.
Another open source game engine has been advancing recently, this time it's openage, the game engine for playing games like Age of Empires, Age of Empires II (HD) and Star Wars: Galactic Battlegrounds.