Legend of Keepers: Career of a Dungeon Master from Goblinz Studio is what they're calling a mix between a 'Dungeon Defender and a Roguelite' and it does look good. It will support Linux too!
After being released back in 2012, with Linux support arriving in beta form in 2013, SCS Software continue supporting their driving sim Euro Truck Simulator 2.
Egosoft's latest space sim, X4: Foundations, is releasing today for Windows. Originally, it was to get a Linux beta at release but it seems that's being delayed further.
DASH: Danger Action Speed Heroes is shaping up to be an incredibly promising precision platformer, one for those who like a challenge as much as making one.
Artifact, Valve’s card game has now officially released and after spending more hours than I will ever admit playing it, here’s some of my own thoughts while played on Linux.
While it didn't manage to get funding on Kickstarter, the challenging action platformer Damsel released on Steam for Windows in October, with it looking like a Linux version is coming too.