I've played it, but never beaten it. It is that rare, rare game that generates an actual sense of dread when I play it, sometimes opting to NOT play it because of that. RE7 being the other one. Alien Isolation is all about the tension and mission, and it's not a "shooter" in the usual sense. I once spent 20 minutes under a desk hiding from Alien because I couldn't find a good enough window to move to the next room or so. You can't kill Alien, and all enemies are hard to kill because you're not playing as some comically over powered bad ass, but a regular person. So the game focuses on stealth.
Last week I finally played Journey. What a wonderful masterpiece. For some reason I had this idea that it was a different game. That you spent weeks / months running across a desert occasionally running into procedurally generated ruins that you could explore at random intervals, all while heading to the mountain with the light. So I was surprised to get to the end so quickly. But I've played it through about ten times now, and am not playing it for a week to get 100% completion on trophies.
I've come back to The Witcher after a 3 year absence. At first I was wondering why I stopped playing, but I think it's due to the fact that it overdoes certain aspects of the game and there's just too much shit to deal with in the menu's as far as crafting and all that shit. I'm walking around with a ton of stuff and no clear idea what to do with it all. Ingredients, mutagens, etc. I seriously thought of starting the game over because there's so much info to catch up on as far as what I was doing, where I left off, what quests and side quests I was on. I almost went back to Skyrim. But I've got to check Witcher off my "incomplete games" list, so i want to get through it.