I just finished Sleeping Dogs, and had a great time with it. It was my Dead Island of 2012.
Think about it, both games came out after the mid-year drought. Both were relatively under-the-radar in terms of press coverage. Both were fairly well received as fun yet flawed open world games. And both hit the same spot for me; giving my something pulpy and loose to enjoy before the bigger releases of the year start arriving.
I hear rhetoric that "B Games" are dead, but I think that this game fits perfectly into that middle-class tier. This game is really flawed, and lacks a lot of polish but when it works it's exhilarating. And that's what I want from my B games: you don't have to deeply immerse me in a world or it's fiction. Just entertain me for 10 hours and I'll gladly recommend you to my friends.