One of my favourites lately has been RimWorld.
A sort of colony simulator where your characters have to survive the harsh environment of the planet where they crash-landed, as well as the occasional raiding parties.
It's similar to Prison Architect (another indie), which is also nice, but I prefer the sci-fi aspect of RimWorld.
The game is currently in alpha, but it already runs quite well, and has a Linux version.
I've also been playing Faster Than Light and Kerbal Space Program which need no introduction here, and Gunpoint which despite not being that new anymore, is a very compelling 2d platformer.
Unfortunately, Gunpoint only has a Windows version and runs like a dog on Wine (at least it did for me, YMMV).
On Android I've been playing The Room 2, which was released just a few days ago.
That one's also pretty good, but I think I enjoyed the first installation more. Not sure if it was because of the novelty at the time, but I feel like the first had more depth to each table.
AAA games are becoming less and less interesting for me. It feels like the really innovative game making is being done by indies. Big companies seem to be interested only in sure investments, so they keep on pushing the same stuff year after year.
Not that that's completely bad. I did enjoy the hell out of GTA V, but it does follow a formula.