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 mods that at first he was "too afraid to mod Minecraft at all", but learned to appreciate it when he realized that modding "Minecraft" is "pretty forgiving". Eddy does nevertheless mention that he feels Mojang's fast development pace regarding the main game has slowed down the progress of the most popular mods. Similarly, Benjamin Abbott of "Metro" agrees that adding mods to "Minecraft" is "a thorough pain in the backside", though he concedes that "the result is usually worth it". Matt Smith of "MakeUseOf" says he is disappointed with most of the "Minecraft" mods available, claiming they don't modify the game