Summus will distribute the games to major wireless carriers in the U.S.
According to a new report by analyst firm IDC, wireless gaming revenue is
estimated to become the single largest wireless data application category,
rising to nearly $1.5 billion annually by 2008.

About Mattel

Mattel, Inc. With
worldwide headquarters in El Segundo, Calif. Summus partners with leading content brands
to develop compelling and unique wireless applications and content for the
mobile phone, focused within the most popular areas of growth, including
photo-messaging , multi-player games, news/information and personalization. Actual results may differ materially from the results predicted.

All trademarks and/or registered trademarks are the property of their
respective owners.

OpenTV Introduces IP Television (IPTV) Solution for Cable Satellite and Telecommunications Operators

"OpenTV Core 2."
OpenTV brings advanced, feature-rich digital TV services to the world of
IPTV including VOD, PVR and network PVR, enhanced and interactive television,
games , information services and personal and protected media distribution
throughout the connected home .

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(NYSE: MAT), to develop and
distribute America's favorite card game, UNO, and other classic games;
Ker Plunk!, Rock 'Em Sock 'Em Robots and Toss Across for the
mobile phone. "Our classic games portfolio has broad age appeal and has been
entertaining kids of all ages for generations with fun, engaging game play."

Mobile gaming is big business.S and
abroad. OpenTV Middleware to Support Traditional and Hybrid Broadband IPTV Networks

AMSTERDAM, Netherlands, Telecom Video Europe, May 10 /PRNewswire-
FirstCall/ -- OpenTV Corp. The new
product, which will be commercially available this June, extends the
capabilities of OpenTV's proven, scaleable middleware solutions to network
operators wishing to deploy IPTV services over traditional and hybrid
broadband IP networks. "With OpenTV IPTV, operators can now build IPTV
services without compromising on advanced features such as video on demand
(VOD), personal video recording (PVR) and interactivity, all while relying on
a proven platform with global distribution, support services and a world-wide
developer community with OpenTV applications and content ready to deploy.
Whether a new entrant into the digital TV market wants to deploy IPTV, or a
cable or satellite operator wants to leverage its existing infrastructure to
deploy over IP, OpenTV Core 2.

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The relationship will leverage Summus' wireless entertainment expertise to
deliver compelling mobile versions of the popular games. Summus will
utilize its innovative multiplayer game platform, leader board
capabilities, highest quality graphics and artificial intelligence (AI)
used in the development of Summus' other mobile games, including the
popular Texas Hold'em by Phil Hellmuth. Summus adds scale, innovative game applications and
distribution expertise," said Phil Jackson, Vice President of Marketing,
Mattel. The casual gamer has shown tremendous
interest in mobile games, so games that appeal to a broader audience,
consisting of both males and females of all ages, have seen success in
mobile. Summus designs and develops these applications with the industry's
most intuitive navigation that is designed for a consistently superior user
experience . All documents are available through the SEC's Electronic Data
Gathering Analysis and Retrieval system (EDGAR) at www.sec.summus. Summus hereby disclaims any obligation
to publicly update the information provided above, including
forward-looking statements, to reflect subsequent events or circumstances. (Nasdaq: OPTV), one of the world's leading
providers of technologies and services enabling the delivery of digital and
interactive television, today announced the introduction of OpenTV Core 2.0
for IPTV for cable, satellite and telecommunications operators.0 for IPTV ensures IPTV support for our worldwide customer
base," said Tim Evard, OpenTV's senior vice president and general manager of
products and marketing.0 for IPTV also makes it easy for
OpenTV's over 35 set -top box manufacturer licensees to easily deliver IP
capable set-top boxes with OpenTV Core middleware and its robust set of
digital and interactive television features.

About Open TV
Open TV is one of the world's leading interactive television companies.

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PRESS RELEASE Summus and Mattel Join Forces to Deliver Classic Games to Wireless

(USA) (OTC BB: SMMU), a leading
provider of mobile media applications that optimize the consumer wireless
experience, today announced it has partnered with the world's leading
family products company, Mattel, Inc. For this reason, board games and other game titles with mass appeal
are compelling to the wireless gamer.com) is the worldwide leader in the
design, manufacture and marketing of toys and family products, including
Barbie , the most popular fashion doll ever created. The Mattel vision is to be the world's premier toy
brands -- today and tomorrow.summus. In addition, OpenTV's open
interfaces and relationships with leading digital television vendors provide
network operators maximum flexibility with freedom of choice for rights
management and content protection systems (CA/DRM), media formats, video
servers, set-top boxes and OSS/BSS systems.

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Summus, Inc. The games will be offered on the
leading wireless platforms , including QUALCOMM's BREW solution, and the
Java 2 Platform, Micro Edition (J2ME). Industry experts are estimating that mobile
games are currently worth approximately $2 billion worldwide, and as such ,
it is one of the fastest growing sectors of the overall games business. (NYSE: www.mattel. The Mattel family is
comprised of such best-selling brands as Hot Wheels, Matchbox,
American Girl and Tyco R/C, as well as Fisher-Price brands
(www.com), including Little People, Rescue Heroes, Power
Wheels and a wide array of entertainment-inspired toy lines., Mattel employs more than
25,000 people in 42 countries and sells products in more than 150 nations
throughout the world.com.gov or from
Summus ' web site at www.opentv.

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"Mattel continues to look for new ways to build its brand presence in
wireless platforms."

"The relationship with Mattel extends Summus' strategy of leveraging top
brands and delivering compelling and fun mobile products that resonate with
the mobile audience ," said Gary Ban, CEO of Summus. Mobile games are not just
for the hard-core gamer anymore.fisher -price. For more information, see www.
More information about potential risk factors that could affect our
business, products, and financial results is included in Summus' annual
report on Form 10 -K for the year ended December 31, 2003, and in reports
subsequently filed by Summus with the Securities and Exchange Commission
("SEC").

0 for IPTV enables them to deliver scalable
solutions quickly and cost-effectively to their subscribers.
Deployed in over 50 million digital set-top-boxes in 96 countries, the
company's software enables a wide array of functionality, including enhanced
television, interactive shopping, interactive and addressable advertising,
games and gaming, personal video recording, and a variety of consumer care and
communication applications. For more information , please visit http://www.com.

data games

beginning with a multiplayer UNO wireless game. Ker Plunk!, Rock' Em
Sock 'Em Robots and Toss Across will be available in both single
and multiplayer formats, throughout 2005.
That combined with the expertise of Summus makes this an exciting venture
in which Mattel is thrilled to play a part. "Through relationships
such as this one, Summus has elevated our game strategy and become a leader
in wireless gaming.

About Summus

Summus is a leading provider of mobile media applications that optimize the
consumer wireless experience.
Summus currently offers an ever-growing list of 30 mobile phone
applications deployed through 26 major wireless carriers in the U.

This press release contains forward-looking statements that involve risks
and uncertainties concerning Summus' business, products, and financial
results.com. OpenTV Core 2.