 Founder Harry Nathan Gottlieb created the CD-ROM game "You Don't Know Jack" (YDKJ) in 1995, which became a massive success and established a franchise of YDKJ titles from 1995 to 1998.Facing a major shift in the computer game market, as players moved from personal computers to home consoles, Jellyvision shuttered in 2001.Later that year, Gottlieb launched a new company called the Jellyvision Lab, with a focus on developing business software inspired by YDKJ's voice-driven interface.