Played since early July:
Sniper Elite 3: just finished the campaign in normal difficulty. I tried authentic difficulty (no HUD, no save or checkpoint during a level, no aim assist, nothing) but it's way too hard (large levels and no saves), so I'll try in coop.
Alien Rage: surprisingly good albeit mighty cheesy space FPS. Some buggy achievements.
RiME: Gorgeous graphics, nice story, awesome music and sounds.
Lara Croft GO: a good puzzle game, ported from mobile; almost finished, but the final levels are tough
Deus Ex GO: mobile only sadly, this one didn't get a PC/Mac port. Playing on a 5" screen sucks, but the game is good and very challenging, puzzles are harder then Lara Croft GO overall.
AER Memories of Old: poetic, open world, kind of walking simulator mixed with adventure
Shuyan Saga: half visual novel, half kung fu fighting. I liked it. Beautiful pictures.
Deus Ex Mankind Divided: latest Deus Ex, still as good as always. Gorgeous graphics. A couple bugs (mainly annoying for the Foxiest of the Hounds achievement: don't trigger any alarm in the whole game). Benefits from being installed on a SSD, because of the long load times.
Desire: point and click adventure. Disturbing and NSFW.
And a bunch of lower quality stuff best forgotten (like Forest Harvest Simulator).