I enjoyed Fallout 4 (preferred it to The Witcher 3, which might be the "worst" game I've played this year if "worst" means "least enjoyable to me") but I mean... I imagine a lot of people don't play games they don't like? So "worst you've played" doesn't have to be worst, broken, terrible game to be fair (I do think Fallout 4 gets ridiculous hate for that, but some of the comments are more "I was disappointed", which -- though I personally was not -- is fair.)

The only game this year I've really played much of and been disappointed with was The Witcher 3. The only 2 games I've played this year-ish at all (not sure what month I rented Bloodbourne, might've been last March so 13 months) and not really enjoyed were Bloodbourne, which I knew I'd hate so rented briefly just in case I didn't, and The Witcher 3, which I'd hoped to enjoy but which felt more like a job to play because I disliked Geralt so much and the world so much and the story/characters (nothing "wrong" with the game except the story/characters/choice mechanics are not to my taste -- too "gotcha" and grimdark for me; monsters and Gwent were cool).

But I don't play games I don't think I'm going to like. The only other PS4 game I can think of that really disappointed me was Destiny (well over a year ago, played just a month at launch -- it wasn't terrible but no story = no fun for me, and it got repetitive quick; The Division was a much better version of the experience my SO and I wanted from Destiny; we felt satisfied when we finished The Division but got no sense of story or purpose from Destiny). But, again, I tend to only play games that I think I'll like and I tend to know my own taste.