Minecraft led to Persson becoming one of "Forbes" "World's Billionaires". "Minecraft"s music and sound effects were produced by German musician Daniel Rosenfeld, better known as C418. The background music in "Minecraft" is instrumental ambient music. On 4 March 2011, Rosenfeld released a soundtrack, titled "Minecraft – Volume Alpha"; it includes most of the tracks featured in "Minecraft", as well as other music not featured in the game. The video game blog Kotaku chose the music in "Minecraft" as one of the best video game soundtracks of 2011. On 9 November 2013, Rosenfeld released the second official soundtrack, titled "Minecraft – Volume
Crown and Council once they have eliminated every enemy, regardless of actual remaining neutral tiles. There are 75 maps, with the possibility of additional maps being procedurally generated. The game was developed entirely by Mojang programmer Henrik Pettersson. It was originally conceived in a 72-hour game jam, and was inspired by the games "History of the World" and "Slay". Pettersson described the game as "experimental", and that while Mojang remains "a "Minecraft" company doing "Minecraft" things" and that most of the prototyping happens within the "Minecraft" environment, developpers have some time set aside to work on their own ideas. As a hobby project,