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 time. Mojang stepped in to save the project. Another controversy came about in March 2017, when Slovakian cybercompany ESET revealed that 87 examples of trojan horses were distributed through the Google Play Store under the guise of "Minecraft" mods. Their purpose was to either aggressively display ads or con players into downloading other apps. Combined, these fake mods gathered over one million downloads in the first three months of 2017. The total number of Minecraft mods is officially very hard to calculate because of the sheer number of them, both old and new ones, but one of the repository websites,