DigitalDNA Games announced that CastleMiner Z has hit the 1 million sales mark after releasing on September 11, 2011. This makes it the first million-seller for Xbox Live Indie Games.

The game is similar to Minecraft in many of its elements, not unlike many hit games in the XBLIG marketplace. However, the emphasis on action and first-person shooting has helped put the $1 game over the top.

A PC version of CastleMiner Z has been submitted to Steam’s Greenlight process.