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
Lego Minecraft with custom moulds for the character heads, tools and certain body parts (for example the Creeper, which consists of primarily a single moulded piece for its torso and legs). When asked about Lego Minecraft's beginnings, Mojang chief executive officer Carl Manneh stated that "it was one of the first things we talked about when we started Mojang." Mojang started the project on the Lego CUUSOO program, which required ten thousand signatures for the project to be approved. With the strong support of the "Minecraft" community, the signature objective was achieved within a matter of days, and the development of the