The Witcher 2: Assassins of Kings is coming to Xbox 360 April 17, and buyers of the game's $79.99 Dark Edition will receive extra items in their big, fancy box. In addition to the quest book and world map included in the standard version of the game, the Dark Edition includes a making-of disc and original soundtrack, a 200-page art book, wolf's head witcher medallion, and some stickers. Those who pre-order The Witcher 2 from various retailers will also receive other game-related memorabilia...