How many copies of Minecraft have you bought? I think I've bought it a couple of times on PC, and definitely once on mobile. Although this 12 million is just PC sales, it seems. Despite being four years old, in just the last 24 hours it's sold 13,947 copies. At full price (€19.95) that's £236,880 in the last day! Even accounting for discounts, when you guess at Xbox and mobile sales, it puts total revenue somewhere near the £200,000,000 mark.
Meanwhile, Notch is flying helicopters into Jaguars because he likes the scraping sound, before blowing up a castle and climbing his caviar-and-fois-gras mountain. Cheers, Kotaku.