Unphased is a unique sort of puzzling platformer. A big part of the game is figuring out what the game is all about, so I don't want to describe it in too much detail. Here I'll just say that it's a platformer with lots of jumping centered around exploration. You navigate the world screen by screen in search of six special coins that will help you save your friend.
I've made a lot of challenging games, and this is by far, I think, my meanest.
Download it for Windows: https://jdmgames.itch.io/unphased