Over three years out from the release of the first Minecraft Alpha, the popularity of the make-your-own-adventure sandbox game has not died down, and even appears to be rising. Mojang, the game’s developer, this week announced that it sold over 15 million copies of the game during 2012. What’s more, a huge number of those sales were from the mobile edition of the game.

The holiday season was particularly big for Minecraft, as over 1.2 million copies of the game were sold during the week of Christmas. The PC version of the game, where it originated, was actually the platform where the fewest copies were sold, with 241,845 copies sold for Mac or PC over the week.

Minecraft: Xbox 360 Edition has proven to be incredibly popular with Xbox gamers. It broke Xbox LIVE sales records when it was released last may, and over 5 million copies have been sold since. 325,591 copies of the Xbox 360 version were sold during the week of Christmas.

For those who are still denying that mobile has become a legitimate form of gaming, consider that Minecraft: Pocket Edition sold almost 5.9 million copies on iOS and Android last year. The mobile edition sold 706,419 copies during Christmas week alone.

At $7 each, that’s a cool $41 Million just from mobile sales in 2012. Considering that the Xbox 360 edition costs $20 and the PC version is $27, that’s well over $200 million that the small Swedish developer raked in last year. That’s a significant increase to the $80 million Mojang made in the first 15 months after Minecraft was released.