You Don’t Know Jack celebrates 18th anniversary on Steam

You Don't Know Jack, the classic series of quiz-show party games, is on sale on Steam. The nine titles (including the expanded original version) span 1995 to 2003.

Each game costs $2 or $3 each for a total $20 bundle. They're published by Chicago, Illinois-based Jackbox Games, formerly Jellyvision Games, the game's original developer.

“In September 1995, we launched You Don't Know Jack Volume 1 and, somehow, our studio has become even less mature,” said Mike Bilder, the general manager of Jackbox Games, in a press statement. “But we continue to be humbled by the love millions of gamers still have for our franchise, and we wanted to find a way to recognize and celebrate our fans at this meaningless milestone in our history.”

You Don't Know Jack has sold more than 5 million copies on PC and console, and the mobile app has surpassed 4.5 million downloads.