What game was the biggest disappointment for you and why?

As I'll probably finish, if not come close to it, the game I'm currently playing, I'm starting to think about what to play next. As I said before, I wasn't expecting much from the latest installment, given how much I hated Sticker Star, but I've been pleasantly surprised.

It got me thinking:

What are some of your all time worst games you've played?

It doesn't need to be something recent or maybe a piece of hardware not a game itself. Let's get ready for the weekend by complaining!