The Vanishing of Ethan Carter is on sale for less than € 3 on GOG.
https://www.gog.com/game/the_vanishing_of_ethan_carter
On the one hand you just just have to see this game. It’s absolutely stunning and gorgeous, if a little static. On the other hand I kind of lost interest after solving a few puzzles, mainly due to the autosave feature. Iirc it only saves doing the whole puzzle or something along those lines which makes it very annoying to have to quit. (Something I very much appreciate about TWP; save & quit, done.) Also there’s a lot of walking, even if it’s through (mostly) gorgeous environs. I guess that’s what people call a walking simulator.
So I’m not entirely sure I’d recommend it, but on the flipside I did upgrade to the special edition for the artbook & music a while back. Make of that what you will. 
Also there’s this weird thing where you have to get a Redux edition code from the game on GOG as opposed to it just being made available, unless that changed.