The computer game sensation "Minecraft" has become a mainstay amongst school students of all ages. Anecdotally, at Geoscience Australia, we have observed that "Minecrafters" often draw comparisons between their Minecraft experiences and the real world. For some students, the line between reality and fantasy is blurred. At the extremes, there are those who believe that the depiction of concepts in the game is a reflection of the real world, and those who see the game as pure fantasy with no relation to science and the world at large. In truth, Minecraft falls somewhere between these two views. The use of real terms in a fantasy world can lead to confusion. But these questions present a prime opportunity for the classroom teacher to engage students in the true science of geology. This paper discusses some of the misconceptions of Minecraft and some of the scientific concepts posed within the game that may be useful to understand when talking to students about geology.