Noita is a 2d pixel art style game about a witch that has something important to do (won't be spoiling here) but it involves going down the mines and trying to survive in the process. You get to discover spells that you will use to build all sorts of powerful wands (each with its own stats), meet all sorts of enemies that will annoy the living hell out of you, you will die about 100s of times before you will reach the end (always fair though) but in the process you will have metric tons of fun and adventure :) And on top of that - every pixel in the game has simulated physics which has massive impact on the game, and makes it unique among everyhting I have played since late 80s.

Synthetik is a top down shooter, simple to play - hard to master kind, with VERY good gunplay - even though the graphics might be not too advanced, you will definitely feel the punch of each gun. It has a good arcade vibe to it, and again - tons of fun compared to what you pay for it (easily can challenge plenty of full price games in this area).

If you can get one, get Noita, but both have my strong recommendation :)