Code Club AB Code Club AB Code Club AB is a Swedish video game developer based in Motala, founded in 2007 by Rolf Jansson and Markus Persson. The company developed the sandbox massively multiplayer online role-playing game "Wurm Online" and its standalone version, "Wurm Unlimited". Code Club AB was founded as Mojang Specifications AB by Rolf Jansson and Markus Persson in 2007, as the game started to turn a profit. Later in 2007, Markus Persson stepped out of the project and left the company, however, he wished to retain the "Mojang" name for himself, because of which Jansson renamed the company Onetoofree AB.
Minecraft apparently taking full ownership of the CraftBukkit modification, although the validity of this claim was questioned due to its status as an open-source project with many contributors, licensed under the GNU General Public License and Lesser General Public License. On 15 September 2014, Microsoft announced a $2.5 billion deal to buy Mojang, along with the ownership of the "Minecraft" intellectual property. The deal was suggested by Persson when he posted a tweet asking a corporation to buy his share of the game after receiving criticism for "trying to do the right thing". It was completed on 6 November 2014, and