There have been A LOT of games I never got around to finishing in the long stretch of time I've been playing video games, and for a myriad of different reasons; the console/ games broke, difficulty, losing patience with the game (although that was mostly a childhood issue), losing interest in the game, losing the game disc (or cartridge), none of my friends played and/ or I sucked at it. Literally too many games for me to even remember by this point.
Although the single worst example in recent memory would be Prey (the one by Arkane Studios - not the 2006 game of the same name). It was a fun game by all accounts and seemed like the perfect kind of game for me. It had great mechanics and decent progression, the game took place on a space station with segments where you could actually float around outside, good sense of mystery and world-building, and there was a good deal of choice on approaching situations to suit your preferred play-style. It felt more like a spiritual successor to System Shock than 2006's Prey - which I believe was actually what sold me on the game in the first place. So with all that in mind...what happened?
It just lost me at some point, and I'm not exactly sure why. I just put it down and didn't pick it back up.
I still have the game, though. I'm sure I'll pick it up and start afresh at some point. But as of right now, all of my free time is being eaten up by Hollow Knight, so Prey will just have to wait.