Microsoft continued to build on the success of its Xbox platform by extending it's popular Live gaming platform to Windows PCs. The service would debut on May 8, and would connect gamers on both platforms together.

"Shadowrun" will be the first PC and Xbox 360 title to allow gamers on either platform to play one another in a single environment starting in June, although the Vista version of "Halo 2" due May 8 will permit person-to-person matches across either platform.

"UNO," which has become a popular Xbox Live Arcade title, is slated for release later in the year.