• Space Chem http://www.zachtronics.com/spacechem/ [same maker has a bunch of other games I'll most likely try out this winter] Hard to explain though the title covers it.

• TIS-100 http://www.zachtronics.com/tis-100/ [oh heh, didn't know it was the same maker, could have figured though] A puzzle game in which you have to write some sort of assembly(er) only with multiple processors. It's about a spy/encryption machine and has a need little story and hidden objectives (also a pretty extensive manual)

• Slay The Spire https://www.megacrit.com/press/#factsheet [early access but still very playable, weekly updates/challenges] A deck building rogue-like (don't worry, all the cards come with the game). Very addictive when you die, but when you succeed you either choose another character or let it lie for a couple of weeks

• Into the breach https://subsetgames.com/itb.html [From the makers of FTL (check that one out too, very nice)] Puzzle time-travel turn based strategy/puzzle game. Save humanity (or not) over and over again (rogue-like elements)

• KeeperRL http://keeperrl.com/ [also early access, sometimes Linux support breaks for a couple of weeks] It's a rogue-like DUNGEON KEEPER like game, only nice 2d with optional ascii sprites (but the default sprites are awesome 2d art). Very enjoyable. Build the ultimate evil lair!

• Sunless sea http://www.failbettergames.com/sunless/ [There is a sequel Sunless skies or something, but haven't played that one] An atmospheric story driven game, nice art and cool lovecraftian vibes. Gets dull after a few days, but when it's a stormy night it's very enjoyable.

• Caves of Qud http://www.cavesofqud.com/ [nethack+++++++++++] Very nice science fantasy RPG & roguelike epic. It’s set in a far future that’s deeply simulated, richly cultured, and rife with sentient plants.

• Paper Please http://www.papersplea.se/ [Be ready for feels] A dictatorship border-guard simulator

• Darkest Dungeon https://www.darkestdungeon.com/ [indie with some DLCs] As the url implies a Lovecraftian rogue-like, hire people, keep them fed, happy and SANE while delving into the pit's of what lurks beyond hell.

• Don't starve https://www.klei.com/games/dont-starve [There is a multiplayer version (Don't starve together)] A surreal survival/craft game, don't die/starve because starting over is a PAIN (unless you unlocked a new character).

That should give you something todo! Some of the games already made it to mobile or even switch platforms!