Rocksteady Studios is a UK games developer based in London. It was founded in 2004, by Jamie Walker and Sefton Hill, formerly of the Argonaut Software studio Several other Argonaut employees were also brought on board. SCi Entertainment who were later renamed Eidos was a founding investor in the studio, holding just over a quarter of the company shares.
After two years development, their first release was Urban Chaos: Riot Response, published by Eidos for the PS2 and Xbox consoles.
Eidos then obtained the rights to make a Batman game in 2007, Rocksteady were asked to put some ideas together and their novel take on a film license went into full development in May 2007.
Batman Arkham Asylum was released in 2009 to critical acclaim and huge commercial success. After the game won numerous awards, Warner Bros Interactive entertainment gained a substantial but undisclosed majority stake in the company. Eidos initially kept their shares, but the studio is now wholly owned by Warner.
The studio has released three more batman games, and is currently working on a suicide squad title.