That's the extras-stuffed Game of the Year editions of Batman: Arkham Asylum and Batman: Arkham City, while Batman: Arkham Origins comes with the season pass and the Black Mask and Online Supply Drop DLC. In other words, it's as tight with value as Adam West's Batsuit.
(Sorry, Blackgate fans, it's not included)
All three Arkhams are for Windows PC, while Arkham City works on Mac. Purchase the bundle and you'll get Steam codes to redeem the games and the DLC.
If that sounds like your cup of superhero, you need to be fairly quick-to-the-batmobile to take advantage. The deal ends at midnight PT on Wednesday, December 17 (3AM ET).
[Image: Warner Bros. via glorious days)