BigWorld Technology Suite

23 October 2009

FOR IMMEDIATE RELEASE

[Beijing, China] BigWorld Pty Ltd and Sohu.com (NASDAQ: SOHU) jointly confirmed today that Sohu’s online gaming subsidiary, Changyou.com Limited (NASDAQ: CYOU) have signed a multi-license deal to use BigWorld Technology as their platform for a number of future game developments.

Xiaojian Hong, CTO of Changyou asserted that Changyou has the best game development team in China and always strives to make the best online games. He said that “The BigWorld engine is the best MMOG solution worldwide and has success stories in China. Changyou has licensed BigWorld without hesitation. I believe that we will leverage the BigWorld engine in our upcoming 3D products to make them mature and perfect. Changyou will continue to strive to produce many higher quality MMOG titles for end-users.”

John De Margheriti, CEO of BigWorld commented, “It’s an honor to have the privilege of working with such a respected and successful NASDAQ listed company. This new cooperation between BigWorld and Sohu Changyou will provide consumers with more choice of high quality online games and ultimately an enhanced gaming experience for players.”

BigWorld’s engine is significantly different from other recognized commercial engines. It includes all of the complex capabilities that are required to make the next generation of online games and is the only online game development platform that has a complete technical architecture. By having a dynamically load-balanced server infrastructure and many other innovative technical features, BigWorld Technology has quickly become the industrial standard in the global market of MMOG commercial licensing. It is the choice of many world renowned game developers. In China, there are over 10 commercially live MMOGs developed using the BigWorld Technology.

Through close cooperation with many licensees and technical partners, BigWorld recently showcased ‘BigWorld Technology 2.0’ at GDC. Version 2.0 will include hundreds of new features and optimizations for the global hardware environment and network environment. As BigWorld’s engine also provides powerful editors and data analysis tools, game developers can avoid unknown and time-consuming technical risks and concentrate on developing game content and improving end-user experience.

About Changyou

Changyou.com Limited’s (“Changyou”) (NASDAQ: CYOU) massively multi-player online role-playing games (“MMORPG”) business began operations as a business unit within Sohu.com Inc. (NASDAQ: SOHU) in 2003. Changyou was carved out as a separate, stand-alone company in December 2007 and is now a leading developer and operator of online games in China and completed an initial public offering on April 7, 2009. Changyou currently operates three online games, including the in-house developed Tian Long Ba Bu, one of the most popular online games in China, and the licensed Blade Online and Blade Hero 2. Changyou’s pipeline games include the licensed Immortal Faith, Legend of the Ancient World, and the in-house developed Duke of Mount Deer, which received an award as one of China’s most anticipated online games. Changyou’s leading technology platform includes an advanced 2.5D graphics engine, a uniform game development platform, effective anti-cheating and anti-hacking technologies, proprietary cross-networking technology and advanced data protection technology. For more information about Changyou, please visit http://www.changyou.com/en/.

About Sohu.com

Sohu.com Inc. (NASDAQ: SOHU) is China's premier online brand and indispensable to the daily life of millions of Chinese, providing a network of web properties and community based/web 2.0 products which offer the vast Sohu user community a broad array of choices regarding information, entertainment and communication. Sohu has built one of the most comprehensive matrices of Chinese language web properties and proprietary search engines, consisting of the mass portal and leading online media destination www.sohu.com; interactive search engine www.sogou.com; #1 games information portal www.17173.com; the top real estate website www.focus.cn; #1 online alumni club www.chinaren.com; wireless value-added services provider www.goodfeel.com.cn; leading online mapping service provider www.go2map.com; and developer and operator of online games www.changyou.com.

Sohu corporate services consist of brand advertising on its matrix of websites as well as paid listing and bid listing on its in-house developed search directory and engines. Sohu also offers wireless value-added services such as news, information, music, ringtone and picture content sent over mobile phones. The Company's massively multiplayer online role-playing game (MMORPG) subsidiary, Changyou.com (NASDAQ: CYOU), currently operates three MMORPGs, Tian Long Ba Bu, Blade Online and Blade Hero 2. Sohu.com, established by Dr. Charles Zhang, one of China's internet pioneers, is in its thirteenth year of operation.

About the BigWorld Technology Suite

Comprised of the BigWorld Server Software, Content Creation Pipeline, 3D Client Engine Package, Live Management Tools & Instrumentation, the BigWorld Technology Suite is the premier complete and proven massively multiplayer game development solution, providing all of the complex systems required to produce engaging, highly scalable next-generation MMOGs and Virtual Worlds.

About BigWorld Pty Ltd

BigWorld Pty Ltd was formed in 2002 to commercialize years of intense R&D, which started in 1999 and continues to this day. With a direct local presence in the USA, China, Japan and Europe, BigWorld licenses its middleware platform to game studios and publishers around the world to build successful next generation MMOGs and Virtual Worlds. For more information and links to currently released or in production titles, visit www.bigworldtech.com

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Media Contact: Casey Gregory

Email: caseyg@bigworldtech.com

Phone: +61 2 6162 5120