Beta, which includes the music that was added in later versions of the game. A physical release of Volume Alpha, consisting of CDs, black vinyl, and limited-edition transparent green vinyl LPs, was issued by indie electronic label Ghostly International on 21 August 2015. In addition to Rosenfeld's work, other composers have contributed tracks to the game since release, including Samuel Åberg, Gareth Coker, Lena Raine, and Kumi Tanioka. Variants For the tenth anniversary of the game's release, Mojang remade a version of Minecraft Classic in JavaScript and made it available to play online. It functions much the same as creative mode, allowing players to build and destroy any and all parts of the world either alone or in a multiplayer server. Environmental hazards such as lava do not damage players, and some blocks function differently since their behavior was later changed during development. Around 2011, prior to Minecrafts full release, there had been collaboration between Mojang and The Lego Group to make a Lego brick-based Minecraft game to be called Brickcraft. This would have modified the base Minecraft game to use Lego bricks, which meant adapting the basic 1×1 block to account for larger pieces typically used in Lego sets. Persson had worked on the preliminary version of this game, which he had named "Project Rex Kwon Do" based on the joke from Napoleon Dynamite. Lego had greenlit the project to go forward, and while Mojang had put two developers on the game for six months, they later opted to cancel the project, as Mojang felt that the Lego Group were too demanding on what they could do, according to Mojang's Daniel Kaplan. The Lego Group had considered buying out Mojang to complete the game, but at this point Microsoft made its offer to buy the company for over $2 billion. According to the Lego Group's Ronny Scherer, the company was not yet sure of the potential success of Minecraft at this point and backed off from acquisition after Microsoft brought this offer to Mojang. Virtual reality Early on, Persson planned to support the Oculus Rift with a port of Minecraft. However, after Facebook acquired Oculus in 2013, he abruptly canceled plans noting "Facebook creeps me out." A community-made modification known as Minecraft VR was developed in 2016 to provide virtual reality support to Minecraft: Java Edition oriented towards Oculus Rift hardware. A fork of the Minecraft VR modification known