||Microsoft announces Games for Windows – Live, a version of Xbox Live for the Windows platform. The service launched on May 8.
||Microsoft announces the new "Xbox 360 Elite" stock-keeping unit (SKU). The revision comes with a bigger hard drive and the ability to output HDMI. It went on sale in April.
||Nintendo and Sega announce Mario & Sonic at the Olympic Games for the Nintendo DS and Wii. This marks the first time Sonic and Mario have ever appeared in a video game together.
||Sony announces that they are discontinuing the 20 GB PlayStation 3 SKU, one of two SKUs available at the systems launch, leaving only the 60 GB SKU available for consumer purchase.
||Blizzard Entertainment announces StarCraft II at Seoul, South Korea.
||Nintendo announces WiiWare, a service similar to Xbox Live Arcade, that will allow developers to release original downloadable games for the Wii. Previously the only downloadable games available on the Wii have been limited to its Virtual Console program.
||After an outpouring of complaints over faulty Xbox 360 hardware, Microsoft announces an extension for the Xbox 360's warranty that applies retroactively to all consumers who have purchased the console since launch.
||Nokia reveals plans to revive its failing N-Gage brand in November; however, this time the line will not be a console, but rather a service players can download onto Nokia phones and/or PCs.
||Halo 3 is released and grosses US$170 million in a 24-hour period, a record for the highest grossing opening day in video game history.
||Activision buys Bizarre Creations, developer of the Project Gotham Racing series.
||Super Mario Bros.: The Lost Levels is released in the United States on the Wii's Virtual Console, twenty-one years after it was released in Japan.
||Bungie announces its split with Microsoft to become an independent studio.
||The Orange Box (a video game compilation that includes Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Portal & Team Fortress 2) is officially released in North America on PC and Xbox 360.
||Electronic Arts (EA) announces plans to buy VG Holding Corp., which owns both Pandemic Studios and BioWare, effectively making both companies subsidiaries.
||EA closes down its EA Chicago studios.
||3D Realms releases a teaser trailer for Duke Nukem Forever after six years since the last trailer and eleven years since announcing the game. It was not released until 2011, 4 years later.