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Batman: Arkham City ships 6m copies

Helps Warner to glowing annual financial report.

Batman: Arkham City has now shipped over six million copies worldwide, publisher Warner Bros. Interactive has announced.

The new figure was released as part of the entertainment group's annual financial report, which saw a healthy bump in revnues.

The Filmed Entertainment division, which includes Warner's gaming interests, reported revenues of $12.6 billion, up from $11.6 billion last year, and operating income of $1.3 billion, up from $1.1 billion.

The Rocksteady Studios-developed superhero sequel took flight in October to universal acclaim.

"First they gave us a hero; now they've given us his ideal playground," read Christian Donlan's 9/10 Batman: Arkham City review.