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 mods Around November 2011, the mod "Forge" was released. Rather than adding new gameplay features to "Minecraft", "Forge" allowed players to be able to run several client-side mods simultaneously. Before becoming compatible with "Forge", "IndustrialCraft" and "BuildCraft" would not run side-by-side, because both of them needed to overwrite the same "Minecraft" base Java files. "Forge" ended the necessity to manipulate these files, allowing separate mods to run together without requiring them to touch the base source code. After "Minecraft" received its first full release in November 2011, the game's modding community continued to grow. In February 2012, Mojang hired developers of