I feel like this is going to come off as trying to throw fuel on a fire but honestly that game for me would be Metal Gear Solid V. I was so incredibly excited for it for so long and ended up being thoroughly underwhelmed and unhappy with the final product. I just could not get behind the structure of it. It also felt drained and devoid of the soul that made the first 4 in that series so special to me. The only thing I really found myself appreciating was how beautiful it was.
I got screwed by an auto save glitch like 5 times before they patched it also. I was so damn pissed. Ultimately only played the game for around 2 weeks I'd say.