Eidos today announced that Tomb Raider: Anniversary will be available for the Xbox 360, first in episodic format to owners of Tomb Raider Legend. The game will be available through the Xbox Live Marketplace in four episodes, with Episodes 1 and 2 released this September, and the next two episodes arriving shortly afterwards. A full retail version is planned to be released for the Xbox 360 later in the year. Check the press release for details and the first two screenshots now uploaded in our gallery.