Blacklight: Retribution (commonly abbreviated as BLR) is a free-to-play first-person shooter video game, released on personal computer (PC). On 14 January 2011, Zombie Inc. revealed that it would be developing the sequel to Blacklight: Tango Down with a free-to-play business model. At the 2011 Electronic Entertainment Expo (E3), the company announced that Perfect World would publish Blacklight: Retribution. The game went to open beta on February 27, 2012 and went live on April 3, 2012. It was released on the Steam Platform July 2, 2012.