Minecraft is turning out to be pretty darned big on the Xbox 360, with the initial sales numbers setting new records for titles sold on Xbox Live Arcade.

Now, we hear that Minecraft for the Xbox 360 has been able to rack up over 1 million copies sold in just five days from its launch on May 9th. This means the title has generated over $20 million at the $20 sale price.

Markus “Notch” Persson, the developer of the original Minecraft, said that the news that players of the 360 version have already spent more than 5.2 million hours mining and playing over 4 million multiplayer sessions, while logging over 2.4 million hours of multiplayer play, defied words; and all he could say was “wow.” We think that pretty well sums it up Markus, and we don’t think this trend is going to end anytime soon.