Jens Bergensten 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 C++ and
Minecraft mods the Bukkit add-on to work on an official modding API, allowing mod developers easier access to the "Minecraft" game files. In May 2015, Mojang announced on social media that they were "still working" on this API, despite announcing it over three years ago. Concern arose following Microsoft's acquisition of Mojang in late 2014. Members of the modding community feared that "Minecraft"s new American owners would put an end to Mojang's established practice of giving free rein to mod developers. Despite the concerns, Microsoft has not announced any changes to Mojang's policies. In April 2015, Microsoft announced that it was adding