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 (the Bedrock Edition), in the form of add-ons. Mods have influenced the main "Minecraft" game on three occasions. Mod developer Dr. Zhark added horses to the game through the "Mo' Creatures" mod. Later on he helped Mojang adapt horses for use in standard issue "Minecraft". Pistons were also originally a part of a mod too, but impressed "Minecraft"s creators so much that they added the feature to the main game. Mojang also admitted that they admired all of the work done on server side modding API Bukkit. In 2012, the Swedish company ended up hiring the lead developers of the