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 Bedrock Edition), in the form of add-ons. Mods have influenced the main "Minecraft" game on three occasions. Mod developer Dr. Zhark added horses to the game through the "Mo' Creatures" mod. Later on he helped Mojang adapt horses for use in standard issue "Minecraft". Pistons were also originally a part of a mod too, but impressed "Minecraft"s creators so much that they added the feature to the main game. Mojang also admitted that they admired all of the work done on server side modding API Bukkit. In 2012, the Swedish company ended up hiring the lead developers of the