Blizzard's next gaming phenomenon, Overwatch, had a pretty decently long beta that closed recently. During it's time, 9.7 million people got on to try it out. A pretty ridiculously large amount, but considering how Blizzard is basically the James Cameron of video game developers, not too surprising.
It has been well received so far as well, so when the game releases on May 24th, it's fair to assume it will be sort of a big deal.
