Jens Bergensten (née Thornell). Jens Bergensten Jens "Jeb" Bergensten is a Swedish video game designer. Since December 2010, he has worked for the video game developer Mojang as a programmer and game designer. He became the lead designer and lead developer of the indie sandbox game "Minecraft", after Markus "Notch" Persson stepped down from his position in December 2011. He is known by his in-game name "jeb_". Bergensten started programming his first games at age 11 using BASIC and Turbo Pascal. By age 21, he was a mapper and modder for the first-person shooter "Quake III Arena". Later he worked as a
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