Jackbox Games, Inc. (formerly Jellyvision Games, Inc.) is an American video game developer based in Chicago, Illinois, best known for the You Don't Know Jack series of quiz-based party video games and The Jackbox Party Pack series. Founded by Harry Gottlieb, the company operated as Jellyvision Games from 1995 until its closure in 2001. After seven years of dormancy, Jellyvision Games was revived in 2008, and the company rebranded as Jackbox Games in 2013. Source: Wikipedia (en)