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 be played through the launcher. Unlike newer versions of "Minecraft", the classic version is free to play, though it is no longer updated. It functions much the same as creative mode, allowing players to build and destroy any and all parts of the world either alone or in a multiplayer server. There are no computer creatures in this mode, and environmental hazards such as lava do not damage players. Some blocks function differently since their behavior was later changed during development. "Minecraft 4k" is a simplified version of "Minecraft" similar to the classic version that was developed for the Java