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 MineCon, there was an "Into The Nether" after-party with deadmau5. Free codes were given to every attendee of MineCon that unlocked alpha versions of Mojang's "Scrolls", as well as an additional non-Mojang game, "Cobalt", developed by Oxeye Game Studios. Similar events occurred in MineCon 2012, which took place in Disneyland Paris from in November. The tickets for the 2012 event sold out in less than two hours. MineCon 2013 was held in Orlando in November as well. MineCon 2015 was held in London in July. MineCon 2016 was held in Anaheim in September. MineCon 2017 was held as a livestream