I won't say much, because I've told my story to a reporter and I'm pretty sure he's still working it into a larger overall story, but I've been offered an exclusive pre-embargo review before as long as my score was above a certain threshold. It was offered exactly like this: "You can publish before the embargo, as long as your score is above X.X."
It was crazy. In the end, I didn't publish first, even though my score was high enough. I just thought it was gross. The person that published first ultimately gave that game its highest score out of anybody else on metacritic/gamerankings. A little fishy, huh?