The Demon Seals are more breakable objects that must be completed to advance your Riddler Challenges in Batman: Arkham City. They appear as demon heads with glowing eyes and rings in their mouths.

The Batman: Arkham library of games will be given to everyone who has already purchased or will purchase Batman: Arkham Knight for PC prior to 11:59 pm PDT, November 16, 2015. We're actively ...

WB Games is currently running a promotion on the PC version that offers the entire Batman: Arkham library in addition to Arkham Knight when users purchase the game on Valve's PC marketplace platform.

To kick things off, we will be giving away FREE digital copies of games from the Batman: Arkham library. This means we will be giving away copies of Batman: Arkham Asylum GOTY, Batman: Arkham City ...

the game is back on Steam. And in a showing of good faith Warner Bros. are offering the entire Arkham library, for free, to those that purchase the game before November 16. To kick things off, we will ...

announced today. To apologize for the inconvenience, WB is offering free digital copies of the entire Batman: Arkham library for those who previously purchased or will purchase it prior to 11:59pm ...