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 official modding application programming interface (API). Texture packs that alter the game's textures and HUD are also available, as created by the community. In July 2013, texture packs were replaced with "resource packs", which have the same role as texture packs, but allow custom audio as well. Players are also create their own maps, which often contain specific rules, challenges, puzzles and quests, and share them for others to play. In August 2012, Mojang added adventure mode for custom maps and in October 2012, Mojang added command blocks, which were created specially for custom maps. In February 2016, Mojang added