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 such as modifications, texture packs and custom maps, exists and is available on the Internet. Modifications of the "Minecraft" code, called "mods", add a variety of gameplay changes, ranging from new blocks, new items, new mobs to entire arrays of mechanisms to craft. The modding community is responsible for a substantial supply of mods from ones that enhance gameplay, such as minimaps, waypoints, and durability counters, to ones that add to the game elements from "Pokémon", "Portal", and "The Hunger Games". To make mods easier to create and install, Mojang announced in November 2012 that it planned to add an