Mojang 2012, Mojang was co-developing a video game codenamed "Rex Kwon Do" alongside an undisclosed developer. Before the title had reached a significant stage of development, Mojang cancelled the collaboration, due to their lack of involvement and influence on the project. In March 2012, Persson revealed that he would be designing a space sandbox game. Although Mojang teased with an April Fools' Day website based around "Mars Effect" (citing the Bethesda lawsuit), it was confirmed that the game was indeed in development, albeit with a different name. On 4 April, Mojang revealed the game's title to be "0x10", set in the
Minecraft (soundtrack) Bandcamp. On 4 March 2011, Rosenfeld released the game's first soundtrack album, "Minecraft – Volume Alpha", on his Bandcamp account. The album was later released on other digital download services. On 9 November 2013, Rosenfeld released the second soundtrack album, "Minecraft – Volume Beta". On 21 August 2015, a physical release of "Minecraft – Volume Alpha", consisting of CDs, black vinyl, and limited-edition transparent green vinyl LPs, was issued by acclaimed indie electronic label Ghostly International. On 4 March 2011, German musician C418 released Minecraft – Volume Alpha, the first "Minecraft" soundtrack album, and his eighth album overall. The album