Warners takes game investment up a level

Acquires a majority stake in Rocksteady Studios

LONDON -- Warner Bros. ramped up its investment in video games Tuesday, announcing the acquisition of a majority stake in London-based interactive entertainment venture Rocksteady Studios. Financial details of the deal were not confirmed.

Rocksteady, the creator of action adventure caper as "Batman: Arkham Asylum" -- which shipped more than 3 million units worldwide -- was founded in 2004 and is headed by Jamie Walker and Sefton Hill.

The acquisition follows Warners' 2009 deal to buy "Lord of the Rings" games franchise Snowblind Studios and earlier deals to buy "Lego" games maker TT Games and "Mortal Combat" interactive publisher publisher Midway Games. Warner Bros. U.K. president and managing director Josh Berger said the deal deepened Warners' relationship with one of the U.K.'s most respected games developers.

"Rocksteady clearly has the talent, expertise and technology to make great games and we are fortunate to continue working closely with them as we further expand our games portfolio," he said.