Turns out the 70 million players is a milestone, and a thing that games can have -- which has just been surpassed by Blizzard's competitive card game Hearthstone. The news comes on the back of the release of the latest expansion Journey to Un'Goro, which features prehistoric dinosaurs. Who, if memory serves me correct, went extinct 70 million years ago. Coincidence? Probably not. Or, yes.
Anyway if you log into Hearthstone during the month of May, which is right now, you'll get three free Journey to Un’Goro card packs. Which is a pretty good deal, and certainly better than what the dinosaurs got. A giant meteor that led to their extinction.