Quantum Replica looks a bit like RUINER in terms of style, but the gameplay mixes in stealth with time-manipulation abilities and the developer has confirmed it's coming to Linux.
Unforeseen Incidents, a point and click adventure from Backwoods Entertainment and Application Systems Heidelberg released recently and it's really quite good.
Evil mansion management and strategy game MachiaVillain is now out with Linux support, here's some thoughts on inviting people into my home and having them for dinner.
Changeover: Decisions caught my eye recently as a new release on Steam. It contains elements of a platformer, a visual novel and horror to create a bit of a weird mix.
SC Controller, the rather great driver and user interface for working with the Steam Controller (and now many others) outside of Steam recently added Bluetooth support.
Wine 3.9 is now officially out and it's actually quite an exciting release, especially as it pulls in the recently release vkd3d for Direct 3D 12 with Vulkan.