Rather than talk about what I'll buy I'll just try to pimp some interesting game that might not get much mention.
I'm playing troubleshooter at the moment, if you want some sort of cross between Xcom and FFT and are willing to put up with a very slow story it's an interesting game.
Recettear is a fun little game about running a store and adventuring in dungeon to find more stuff to craft/sell. It's a bit like an atelier game, only the dialogue is actually fun and doesn't overstay it's welcome.
Monster sanctuary is a mix of metroidvania and pokemon game, although a lot more of the later. Lots of way to build up your monster and you fight in 3 v 3 battle which makes for a lot of interesting tactical choice
Speaking of metroidvania, sundered is a nice looking one. The level are semi randomly generated every time you go trough them so you still have some backtracking to do but its not the same corridor every time. The upgrade you get really change the way you play.
Sundered is a chaotic hand-drawn metroidvania where you resist or embrace ancient eldritch powers, a challenging and unique take on a classic genre from the creators of Jotun, now with local co-op!
store.steampowered.com
Wizard of legend is a super nice roguelike with a tons of different magic that let you play in all kind of way.
Trial of mana is half price, look and sound good with fun character and great classes system.
Grandia 2, okay that one I'm just pimping in the hope that we get some more grandia. Great combat system (sadly the game is way too easy) and fun character (well one character is super fun and the rest of the cast is okay)
Underrail, it's like old school fallout but better (skip the DLC though, it double down on the worst aspect of the game).
Jet lancer, if you played luftrauser and want more, here it is (and if you haven't, go grab luftrauser, its super cheap and its fun)
Crying sun is like FTL but as a tactics with a bigger focus on story.
https://store.steampowered.com/app/873940/Crying_Suns/
And finally
Left alive is a truly awful, game that's full of interesting idea but completely letdown by execution. I'm not really recommending it but if you like playing bad game just to try and figure out why anyone would sabotage their own game it's a really interesting play.
https://store.steampowered.com/app/714370/LEFT_ALIVE/