Guts and Glory is basically the 3D version of the Flash game Happy Wheels and this is even acknowledged by its author, a single developer who started the project on his own during his spare time.
Mr Shifty is a top-down action game inspired by Hotline Miami, but with different aesthetics and a focus on using superhero abilities. The game will be out next year, and the developers started preparing the Linux version two months ago.
City Climber is an upcoming good looking platformer where you need to control a ragdoll character using your mouse or your controller. It was created by one person and right now is looking for votes on Steam Greenlight. There isn't a precise release date, but apparently the game will be finished by next month.
Klei Entertainment have announced their next game titled 'Hot Lava'. They are already planning a Linux version. It's an amusing idea, going back to childhood games of 'don't touch the floor'.
A brand new third-person action adventure game is now available on Linux. Some of the people who made The Girl and the Robot are ex Gameloft, EA and Ubisoft developers!
Atom Zombie Smasher came to Linux a long time ago, but the Linux version never did make it to Steam. It is now being updated by Ethan Lee and the Linux version will be put onto Steam.
Le Havre: The Inland Port is an award winning board-game from Uwe Rosenberg and it will released Monday 29th of August. Good news is it will feature a Linux version.