CONTACT 

Michelle Stephens-Jacob 

425-649-9800 ext. 5189 

michelle.jacob@sierra.com

FOR IMMEDIATE RELEASE

YOU DON'T KNOW JACK(r) FANS REJOICE! RELEASE OF YDKJ 5th DEMENTIA ALLOWS INTERNET PLAY!

Stories of Mass, Spontaneous Worldwide Celebrations Circulate

BELLEVUE, WA (October 30, 2000) - Sierra On-Line(tm) and Jellyvision, Inc.(r) today announced the release of YOU DON'T KNOW JACK(r) 5th Dementia (Windows(r) 95/98/2000), which for the first time introduces Internet multiplayer capabilities to the YOU DON'T KNOW JACK party experience. This brand new game features new questions, a new question type and the familiar fast-paced game show experience that has made YOU DON'T KNOW JACK a worldwide hit. Developed by Jellyvision, Inc. and published by Sierra's Casual Entertainment Division, the YOU DON'T KNOW JACK award-winning series of trivia games has sold over 2.5 million units since 1998. *

"Fans of YOU DON'T KNOW JACK have requested Internet play for some time. With the online play in YOU DON'T KNOW JACK 5th Dementia, we've taken this hit trivia party game and expanded the family room to include the world," said John Friederich, senior brand manager for Sierra. "Millions of people are going to meet and experience the brand like never before. We've heard rumors, now don't quote me on this, that spontaneous celebrations are breaking out all over the world. We think there is a direct link to the release of YOU DON'T KNOW JACK 5th Dementia."

"Friends, family, strangers... and even strange family friends... will be able to play YOU DON'T KNOW JACK 5th Dementia 24 hours a day online or at home," said David Houghtaling, director for Jellyvision. "It's the logical evolution for the series that's going to blow the doors open for even greater surprises to come."

YOU DON'T KNOW JACK 5th Dementia is the first PC game in the game show and trivia categories to have on-line multiplayer competition, as players will be able to play YOU DON'T KNOW JACK on the Internet. The first new YOU DON'T KNOW JACK game in over two years features new hilarious pop culture and high culture questions served up by a sarcastic host. The game also introduces the new Bug Out(tm) question type. In addition, players will have the added capability of selecting their own individual player icons.

Available now for $29.95 MSRP, YOU DON'T KNOW JACK 5th Dementia runs on Windows( 95/98/2000/ME. It can be ordered directly by calling 1-800-757-7707 or by visiting www.sierra.com. Sierra will also publish YOU DON'T KNOW JACK Mock 2 for the PlayStation(r) game console, due to release in November 2000. YOU DON'T KNOW JACK Snack Pack, which shipped in September, contains full versions of YOU DON'T KNOW JACK Volume 1, Television, Movies and The Ride. YOU DON'T KNOW JACK Snack Pack, available as a Macintosh and Windows 95/98 compatible CD-ROM, represents a great value at $39.99 MSRP. For more information on the YOU DON'T KNOW JACK product line, visit www.ydkj.com

Jellyvision (www.jellyvision.com) is a creative company specializing in the invention of completely original interactive experiences. The company is pioneering a new form of interactivity that, unlike a web site, is a full-screen, audio-visual experience, with the pacing and creative production values of television to engage a mass audience. Jellyvision's staff of 65 is organized more like a film production house than a software company. It employs an exceptionally talented group of writers, artists, musicians, performers, designer/directors and a creative engineering staff who understand that creating successful interactive experiences comes not from glorifying technology, but making it invisible, so the audience can be fully immersed in the experience.

Sierra On-Line, Inc. http://www.sierra.com/ is one of the original developers and largest worldwide publishers of interactive entertainment and productivity software. Sierra is a division of Havas Interactive, a global leader in interactive content, and is one of the world's largest publishers of education, entertainment and home productivity software. Its divisions, Blizzard Entertainment(r), Coktel, Knowledge Adventure(r), Sierra(tm) and Flipside.com(tm) are famous for releasing critically acclaimed and award winning titles. Havas Interactive has operations in the US and in Europe and is a subsidiary of Havas, the publishing and information division of Vivendi, a world leader in mass market multimedia communications.

*Sales figures according to PC Data.

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(c)2000 Sierra On-Line, Inc. All software, text, sound and screen graphics (c) 2000 Jellyvision, Inc. All Rights Reserved. YOU DON'T KNOW JACK, Jellyvision and the Jellyvision logo are registered trademarks of Jellyvision, Inc. Bug Out and 5th Dementia are trademarks of Jellyvision, Inc. Any other trademarks are the property of their respective owners.