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 be played through the launcher. Unlike newer versions of "Minecraft", the classic version is free to play, though it is no longer updated. 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. There are no computer creatures in this mode, and environmental hazards such as lava do not damage players. Some blocks function differently since their behavior was later changed during development. "Minecraft 4k" is a simplified version of "Minecraft" similar to the classic version that was developed for the Java