Just saw this on Slashdot... What a game... Impressive graphics, even a free eBook (MS Reader) with the story!
The CD-ROM contains hi-res cinematics and PC extras including full color map, book of knowledge, and player's guide. You can download a free eBook extract (MS Reader) from their website.
A version for Windows and Mac OS X is on the works, according to the site. The links below are pointing to the review and the official website.