Diablo 3.
I can't believe nobody has mentioned it yet. I know people who are still playing just about every other game out there from this year, except Diablo 3. Every single person I know who bought that game has actively shunned it and swore never to give Blizzard another dollar ever again.
The last ten minutes of Mass Effect 3, which were one of the most epic fails in the video game industry since Daikatana.
The hate towards that game is vastly unjustified. It seems like nearly everyone misinterpreted the game. Personally, I thought it was weak, but it wasn't as bad as everyone else said it was.
Mass Effect 3 *was* the ending, so to say. It was packed to the brim with mini-endings that each individually tied off the character and race story lines over the course of all the primary and secondary missions.
The ending to Mass Effect 3 was simply the ending to that particular game. It wasn't any worse then the ending to Mass Effect 1 or Mass Effect 2. Yet for some reason, people expected every single little choice they ever made in the first two games to hold some kind of sway in the final battle.
But that's not how it was. Your previous decisions in the past games WERE taken into consideration- just not at the end of ME3. They were considered as you played through the rest of the game. The outcome of nearly all the missions was influenced in one way or another from an imported save.
What more do you want?
Besides, they actually went back and made it somewhat better with the extended cut. I gotta give them props for that, I'm surprised Bioware even convinced EA to let them spend the time and money to pull entire teams off DLC and go back to "fix" the end of the game.
-SC