Yellowlooper
http://store.steampowered.com/app/1515730
Yellowlooper looks minimalistic but is extremely difficult, one mistake and the level starts again.
don't touch the wall, it's easy :)
Charly „Yellowlooper is my first game that I developed when I was 13
and yes Yellowlooper is the dumbest name for a game“
The Steam release was on January 26th 2021