Limbo with "goodies," the new special edition is chock-full of them. The boxed Limbo Special Edition includes PC and Mac versions of Limbo (sans DRM), the soundtrack, art cards, a nifty sticker of Limbo's boy, "awesome 3D glasses" and a Steam key for the game. If the inclusion of 3D glasses hasn't tipped you off, the special edition of Limbo also features a new anaglyph 3D mode.
The Limbo Special Edition is available right now for $25 on Amazon. If you like Limbo as much as we do, it seems like a pretty nice package.