I’m pretty sure that someone somewhere on the web has recorded those numbers – but I’m too lazy to search right now.

Calculating the average is something I can do, though: On January 12, 2011 Minecraft had sold one million copies. Since then Minecraft sold another 3.4 million copies in 345 days – that works out to an average of a little less than 10,000 copies per day.

That works out to €150k daily revenue for 309 of those days (during beta, €15 per copy) and €190k daily revenue for the rest of the time (after the release, €20 per copy), resulting in a revenue around €50m for 2011.