Mojang's Minecraft has sold 10 million units for PC, Jens Bergensten Mojang's lead designer and developer tweeted recently, who also hinted that horses will be an upcoming addition in the game.
"Minecraft (PC) has hit 10M! As promised, a subtle hint on the main 1.6 feature (thanks @ebbakier): http://imgur.com/qAuCLex :D," Bergensten tweeted.
At the time of writing 10,003,223 units of Minecraft have been sold for Windows PC, Mac and Linux.
To celebrate the 10 million milestone, Bergensten tweeted a photo of horse as "subtle hint" on the main feature for the upcoming 1.6 Update. Minecraft's 1.5 Redstone Update was released last month and included bug fixes, improvements to minecarts, greater consistency to the way redstone ore behaves and a new capacitor block.
Minecraft for PC was initially released as an alpha in May 17, 2009, with a full release following a few years later on November 18, 2011. 7 million copies of Minecraft for PC were sold by August, 2012 and Polygon reported earlier this year that Mojang's revenue for 2012 was approximately $237.7 million.
4J Studios' Minecraft: Xbox 360 Edition was released on May 9, 2012 and surpassed six million downloads in March of this year.