Weaver, Ribisi game for Avatar voice cast

In direct contrast to James Cameron at this year's Electronic Entertainment Expo, Ubisoft has been tight-lipped about its adaptation of the director's upcoming feature film Avatar. The day after the director showed footage of the film, the publisher opened up to reveal some of the big-name voice talent it has secured for the games.

Foremost among the names is Sigourney Weaver (Aliens, Vantage Point), who will reprise her role as Dr. Grace Augustine for the Xbox 360, PlayStation 3, Wii, and PC versions of Avatar. However, the rest of the voice cast will be split up by platform.

The Wii version of the game will also feature Giovanni Ribisi (Boiler Room, Sky Captain and the World of Tomorrow), while the 360, PS3, and PC editions will include Michelle Rodriguez (Fast and Furious, TV's Lost) and Stephen Lang (Tombstone, Fire Down Below). Curiously, neither of the film's two stars, Sam Worthington (Terminator: Salvation, the forthcoming Clash of the Titans remake) and Zoe Saldana (this year's Star Trek reboot), were mentioned in Ubisoft's release.

While the voice actors address the Avatar games' audio experience, Ubisoft is banking on their visuals to really blow customers away. The PC, 360, and PlayStation editions of Avatar are being developed in stereoscopic 3D, the same technology previously seen in movies such as Beowulf 3D and Monsters vs. Aliens. The games will have their own stories running parallel to the events of the film. Working with Cameron, Ubisoft's developers created new characters, vehicles, and weapons to flesh out the universe of Avatar.

No voice cast announcements were made for the PSP or DS editions of the game. All versions of Avatar are set to debut this holiday season, prior to the film's December 18 theatrical premiere. For more on Avatar, check out GameSpot's previous coverage.